{"version":2,"relationshipURLBase":"https://codingai-lec03.pages.dev/course/cls01-signals.html","relationshipResolution":"Resolve relative relationship URLs against relationshipURLBase; complete records and absolute URLs are in blocks.","title":"CLS 01 · 学习信号、表示与迁移","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html","markdown":"https://codingai-lec03.pages.dev/course/cls01-signals.md","pages":[{"id":"reading-opening","title":"CLS 01 · 学习信号、表示与迁移","unit":"CLS 01 · 学习信号、表示与迁移","unitId":"cls01-signals","chapter":"course","number":1},{"id":"reading-block-888b3050938b4b129fc132979f35aa58","title":"1. 训练闭环没有换，先问答案从哪里来","unit":"CLS 01 · 学习信号、表示与迁移","unitId":"cls01-signals","chapter":"course","number":2},{"id":"reading-block-7c1d8bd9378e4cc0ba38be2e7203669a","title":"2. 同一段文字，两种可见条件","unit":"CLS 01 · 学习信号、表示与迁移","unitId":"cls01-signals","chapter":"course","number":3},{"id":"reading-block-eb87fdbf17ad4c73b4dee3f786bd74d9","title":"3. 有了很多训练题，怎样把它们学完？","unit":"CLS 01 · 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学习信号、表示与迁移","unitId":"cls01-signals","chapter":"course","number":15}],"aliases":[{"oldId":"b-a4d192faeb70f095859c5493","targetId":"b-a4d192faeb70f095859c5493","page":"reading-opening","operation":"move","beforeSHA256":"b4d4f150924f255651b3d165679b29ccc46388bfd10174f24f2e93fcbc740863","afterSHA256":"b4d4f150924f255651b3d165679b29ccc46388bfd10174f24f2e93fcbc740863","reason":"Same source body in authored semantic page"},{"oldId":"b-573297ee66a10499bf1088e0","targetId":"b-573297ee66a10499bf1088e0","page":"reading-opening","operation":"move","beforeSHA256":"42cba31deccba2a350b9b23bd0ca1dcaa4c4c5cb9d35c773e1fcb89124788ccd","afterSHA256":"42cba31deccba2a350b9b23bd0ca1dcaa4c4c5cb9d35c773e1fcb89124788ccd","reason":"Same source body in authored semantic 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page"},{"oldId":"b-bfeb230aa157529c40aba658","targetId":"b-bfeb230aa157529c40aba658","page":"reading-block-888b3050938b4b129fc132979f35aa58","operation":"move","beforeSHA256":"d55937e89df270bc802cf678e314931b752ca980edc251d52847753a9a6df3e8","afterSHA256":"d55937e89df270bc802cf678e314931b752ca980edc251d52847753a9a6df3e8","reason":"Same source body in authored semantic page"},{"oldId":"b-5eda0db4d5ce33b5524a2158","targetId":"b-5eda0db4d5ce33b5524a2158","page":"reading-block-888b3050938b4b129fc132979f35aa58","operation":"move","beforeSHA256":"63be3c105638264d2aae901705b39efdac48b51792ecdcca46eeab48da6849b8","afterSHA256":"63be3c105638264d2aae901705b39efdac48b51792ecdcca46eeab48da6849b8","reason":"Same source body in authored semantic page"},{"oldId":"b-e023263ad287d55a9d387d80","targetId":"b-e023263ad287d55a9d387d80","page":"reading-block-888b3050938b4b129fc132979f35aa58","operation":"move","beforeSHA256":"4817fcc914228568a896cf868c7086a259c529d8b0058eafbf7d3c804220921e","afterSHA256":"4817fcc914228568a896cf868c7086a259c529d8b0058eafbf7d3c804220921e","reason":"Same source body in authored semantic page"},{"oldId":"b-4cb229e671788b6366b55529","targetId":"b-4cb229e671788b6366b55529","page":"reading-block-888b3050938b4b129fc132979f35aa58","operation":"move","beforeSHA256":"456a867b4dbb0433e3d8fbc338d2248f469f965ab45799669e1f4f2b2e54c557","afterSHA256":"456a867b4dbb0433e3d8fbc338d2248f469f965ab45799669e1f4f2b2e54c557","reason":"Same source body in authored semantic page"},{"oldId":"b-7194bdc583b64fe4ccb0e288","targetId":"b-7194bdc583b64fe4ccb0e288","page":"reading-block-888b3050938b4b129fc132979f35aa58","operation":"move","beforeSHA256":"e18be066685c20bd70873c87261ce3bc6e6c265ff1e95fada9349e79b886a4f0","afterSHA256":"e18be066685c20bd70873c87261ce3bc6e6c265ff1e95fada9349e79b886a4f0","reason":"Same source body in authored semantic page"},{"oldId":"b-0177316130ac57f2bbe59f4f","targetId":"b-0177316130ac57f2bbe59f4f","page":"reading-block-7c1d8bd9378e4cc0ba38be2e7203669a","operation":"move","beforeSHA256":"162ad3bc977ccaeb0dc38a2a5110ad8cb4a45f5d415db1cff7d395635580d99d","afterSHA256":"162ad3bc977ccaeb0dc38a2a5110ad8cb4a45f5d415db1cff7d395635580d99d","reason":"Same source body in authored semantic page"},{"oldId":"b-7c8520b068cec0c5dcc3dd3a","targetId":"b-7c8520b068cec0c5dcc3dd3a","page":"reading-block-7c1d8bd9378e4cc0ba38be2e7203669a","operation":"move","beforeSHA256":"b476818f6bad4aa6df079682bfc8af8c258e8310cd05c700dd09d1034179fc85","afterSHA256":"b476818f6bad4aa6df079682bfc8af8c258e8310cd05c700dd09d1034179fc85","reason":"Same source body in authored semantic page"},{"oldId":"b-18b06bc07d2e97f3f95ed840","targetId":"b-18b06bc07d2e97f3f95ed840","page":"reading-block-7c1d8bd9378e4cc0ba38be2e7203669a","operation":"rewrite","beforeSHA256":"5353195e8525b3e1bbf0672a9bf65bb23a91377038bda92edccd4b7477f63889","afterSHA256":"12a17291dda39c9371f762411b3e44bcca7e93989ec36d9415cebd2bf77662a1","reason":"Same source identity with figure semantics or reading context enriched"},{"oldId":"b-3469bb65b5229e7e356ece03","targetId":"b-3469bb65b5229e7e356ece03","page":"reading-block-7c1d8bd9378e4cc0ba38be2e7203669a","operation":"move","beforeSHA256":"d245345ecf9d8f3d3f54f10320f356b8a345729800fe87acce39d6c63dcddc3a","afterSHA256":"d245345ecf9d8f3d3f54f10320f356b8a345729800fe87acce39d6c63dcddc3a","reason":"Same source body in authored semantic page"},{"oldId":"b-c393288510e0e443f6c7a782","targetId":"b-c393288510e0e443f6c7a782","page":"reading-block-7c1d8bd9378e4cc0ba38be2e7203669a","operation":"move","beforeSHA256":"5bfb5f2e539b571f55a624b06e0a37c416ea81dd1d2898a6ce6bd099e6c66bcb","afterSHA256":"5bfb5f2e539b571f55a624b06e0a37c416ea81dd1d2898a6ce6bd099e6c66bcb","reason":"Same source body in authored semantic page"},{"oldId":"b-5db137f34c3df5792297f8de","targetId":"b-5db137f34c3df5792297f8de","page":"reading-block-7c1d8bd9378e4cc0ba38be2e7203669a","operation":"move","beforeSHA256":"6493e3df856d6955d61ad800cd287e45ec396364a59371a04aea1fd35663a08e","afterSHA256":"6493e3df856d6955d61ad800cd287e45ec396364a59371a04aea1fd35663a08e","reason":"Same source body in authored semantic page"},{"oldId":"b-fb1b2c94f9c6a3dc7e2fbccb","targetId":"b-fb1b2c94f9c6a3dc7e2fbccb","page":"reading-block-eb87fdbf17ad4c73b4dee3f786bd74d9","operation":"move","beforeSHA256":"5d8f07c71151702629bcdca38fb74b82eedd3654795e2e6a06f69c57ec90640a","afterSHA256":"5d8f07c71151702629bcdca38fb74b82eedd3654795e2e6a06f69c57ec90640a","reason":"Same source body in authored semantic page"},{"oldId":"b-d098b95d5a28d6a8e49fa861","targetId":"b-d098b95d5a28d6a8e49fa861","page":"reading-block-eb87fdbf17ad4c73b4dee3f786bd74d9","operation":"move","beforeSHA256":"927faa07843c07dec329edb670fa7da4905f5742d08099b7e463a53bc21d7c45","afterSHA256":"927faa07843c07dec329edb670fa7da4905f5742d08099b7e463a53bc21d7c45","reason":"Same source body in authored semantic page"},{"oldId":"b-2b9501069082f3dad2e6c8f9","targetId":"b-2b9501069082f3dad2e6c8f9","page":"reading-block-eb87fdbf17ad4c73b4dee3f786bd74d9","operation":"move","beforeSHA256":"7078a4a8969adefdd5884b55833df51bfcb716af6b48f9573975e6952011536c","afterSHA256":"7078a4a8969adefdd5884b55833df51bfcb716af6b48f9573975e6952011536c","reason":"Same source body in authored semantic page"},{"oldId":"b-4bc120f2b17480fdcaf5e718","targetId":"b-4bc120f2b17480fdcaf5e718","page":"reading-block-d43dc7bd31584fc38767f5163e468b35","operation":"move","beforeSHA256":"cccd57ee8447338e9ca96587f53049117161d2807374cacc041d52c10a1954de","afterSHA256":"cccd57ee8447338e9ca96587f53049117161d2807374cacc041d52c10a1954de","reason":"Same source body in authored semantic page"},{"oldId":"b-0ea1196819fdc57ea3f6405e","targetId":"b-0ea1196819fdc57ea3f6405e","page":"reading-block-d43dc7bd31584fc38767f5163e468b35","operation":"move","beforeSHA256":"845b185653aaa1cea61033be45db123d57bfb572095debd8d944b51f68a66263","afterSHA256":"845b185653aaa1cea61033be45db123d57bfb572095debd8d944b51f68a66263","reason":"Same source body in authored semantic page"},{"oldId":"b-837aa3384b6eeaa990f185bd","targetId":"b-837aa3384b6eeaa990f185bd","page":"reading-block-d43dc7bd31584fc38767f5163e468b35","operation":"move","beforeSHA256":"3de99c258846469ef191cbb45e6294fa53033691961bd2c3ca5f6b7197f4c5e1","afterSHA256":"3de99c258846469ef191cbb45e6294fa53033691961bd2c3ca5f6b7197f4c5e1","reason":"Same source body in authored semantic page"},{"oldId":"b-4ee9e4724d06f2ddbf670a95","targetId":"b-4ee9e4724d06f2ddbf670a95","page":"reading-block-fddf2f63720746ee88a0067c645b8993","operation":"move","beforeSHA256":"63535e743d945191ab5f4226ed4ef44ac877530cb6e7f5a3148224619464cf13","afterSHA256":"63535e743d945191ab5f4226ed4ef44ac877530cb6e7f5a3148224619464cf13","reason":"Same source body in authored semantic page"},{"oldId":"b-76836d9cdaae7403f19df7a5","targetId":"b-76836d9cdaae7403f19df7a5","page":"reading-block-fddf2f63720746ee88a0067c645b8993","operation":"move","beforeSHA256":"6fb12967dbd2aba1d9f49921d85936398cf7a13c0e2413f2b330a103e72757bb","afterSHA256":"6fb12967dbd2aba1d9f49921d85936398cf7a13c0e2413f2b330a103e72757bb","reason":"Same source body in authored semantic page"},{"oldId":"b-348e0b54ff49ccd210a23ed3","targetId":"b-348e0b54ff49ccd210a23ed3","page":"reading-block-cfb4a17d6107418597a7692239b5d65c","operation":"move","beforeSHA256":"5a90ccf51ac9d15a9e007c3d2c62e43426e50ca41f33a235743c8f3467479610","afterSHA256":"5a90ccf51ac9d15a9e007c3d2c62e43426e50ca41f33a235743c8f3467479610","reason":"Same source body in authored semantic page"},{"oldId":"b-baa86a76383656428b16b809","targetId":"b-baa86a76383656428b16b809","page":"reading-block-cfb4a17d6107418597a7692239b5d65c","operation":"move","beforeSHA256":"cce7191961c5a0633f7daefc22dccfd6155b1169309b9bbd905e5750c4b65436","afterSHA256":"cce7191961c5a0633f7daefc22dccfd6155b1169309b9bbd905e5750c4b65436","reason":"Same source body in authored semantic page"},{"oldId":"b-a68de0423d23f176506ac730","targetId":"b-a68de0423d23f176506ac730","page":"reading-block-cfb4a17d6107418597a7692239b5d65c","operation":"move","beforeSHA256":"68f9270137fd802a5d082f9d45f11178c725bb357fba0a10b3ba48975998a7dc","afterSHA256":"68f9270137fd802a5d082f9d45f11178c725bb357fba0a10b3ba48975998a7dc","reason":"Same source body in authored semantic page"},{"oldId":"b-1326b022e783a53dfa8764a6","targetId":"b-1326b022e783a53dfa8764a6","page":"reading-block-cfb4a17d6107418597a7692239b5d65c","operation":"move","beforeSHA256":"51714f3758011a82cced6e4570aa54d622a81520ab7e4527e330509acd2f4c61","afterSHA256":"51714f3758011a82cced6e4570aa54d622a81520ab7e4527e330509acd2f4c61","reason":"Same source body in authored semantic page"},{"oldId":"b-8fb8d8d3b26011a3284d27ab","targetId":"b-8fb8d8d3b26011a3284d27ab","page":"reading-block-cfb4a17d6107418597a7692239b5d65c","operation":"move","beforeSHA256":"23f96b016b0917d03d9913652df64a5dba91db6a41f54bdd5a50d013b6544c86","afterSHA256":"23f96b016b0917d03d9913652df64a5dba91db6a41f54bdd5a50d013b6544c86","reason":"Same source body in authored semantic page"},{"oldId":"b-a54f864c04fcd8d64273658d","targetId":"b-a54f864c04fcd8d64273658d","page":"reading-block-cfb4a17d6107418597a7692239b5d65c","operation":"move","beforeSHA256":"1f70a421a00f9c73b3297925e6371a198c17a91a85d3b55a9bb93e20339f9ac4","afterSHA256":"1f70a421a00f9c73b3297925e6371a198c17a91a85d3b55a9bb93e20339f9ac4","reason":"Same source body in authored semantic page"},{"oldId":"b-36576acb7a6e43d5f7b42eb5","targetId":"b-36576acb7a6e43d5f7b42eb5","page":"reading-block-cfb4a17d6107418597a7692239b5d65c","operation":"move","beforeSHA256":"1b3f3c4abbc5bca7e4b0b39328491758d3519a9c1ef259375d9926d758f3c1ab","afterSHA256":"1b3f3c4abbc5bca7e4b0b39328491758d3519a9c1ef259375d9926d758f3c1ab","reason":"Same source body in authored semantic page"},{"oldId":"b-849bfb6f36b48f2fd4bb5962","targetId":"b-849bfb6f36b48f2fd4bb5962","page":"reading-block-cfb4a17d6107418597a7692239b5d65c","operation":"move","beforeSHA256":"930eb6a0387e2fd5859117cf1ee33a669855f853f8ff0ad88ee5b9f233100ebd","afterSHA256":"930eb6a0387e2fd5859117cf1ee33a669855f853f8ff0ad88ee5b9f233100ebd","reason":"Same source body in authored semantic page"},{"oldId":"b-2864a809f65c46840b393295","targetId":"b-2864a809f65c46840b393295","page":"reading-block-cfb4a17d6107418597a7692239b5d65c","operation":"move","beforeSHA256":"31d9fe67069994fb07471109c2e5b348112231d796845fb8aa8469c3fb9d9558","afterSHA256":"31d9fe67069994fb07471109c2e5b348112231d796845fb8aa8469c3fb9d9558","reason":"Same source body in authored semantic page"},{"oldId":"b-5bf2b6de0924e43b4ccb33b1","targetId":"b-5bf2b6de0924e43b4ccb33b1","page":"reading-block-cfb4a17d6107418597a7692239b5d65c","operation":"move","beforeSHA256":"79a0a26dc6514efcd45358f57af8c7edf10791af520dcf9fc0571f7d5bff4367","afterSHA256":"79a0a26dc6514efcd45358f57af8c7edf10791af520dcf9fc0571f7d5bff4367","reason":"Same source body in authored semantic page"},{"oldId":"b-109550c3477545ccedc7e67e","targetId":"b-109550c3477545ccedc7e67e","page":"reading-block-cfb4a17d6107418597a7692239b5d65c","operation":"move","beforeSHA256":"eb72beb8e84de9ca3757fe53cf2401208fa2720a7d836a45a86322915aa7675f","afterSHA256":"eb72beb8e84de9ca3757fe53cf2401208fa2720a7d836a45a86322915aa7675f","reason":"Same source body in authored semantic page"},{"oldId":"b-c1db9528693d18612db64714","targetId":"b-c1db9528693d18612db64714","page":"reading-block-cfb4a17d6107418597a7692239b5d65c","operation":"move","beforeSHA256":"32c5bcb9a923fc54c9be095311b4a2374c2bb0d188b6e96194d3ad9d53cccadb","afterSHA256":"32c5bcb9a923fc54c9be095311b4a2374c2bb0d188b6e96194d3ad9d53cccadb","reason":"Same source body in authored semantic page"},{"oldId":"b-3bb75502cc0fb243177af6c0","targetId":"b-3bb75502cc0fb243177af6c0","page":"reading-block-cfb4a17d6107418597a7692239b5d65c","operation":"move","beforeSHA256":"cc6584cebd8f61b51745fbb097a274ddeb0441702445fa8da3b8c6d8b4d7cc12","afterSHA256":"cc6584cebd8f61b51745fbb097a274ddeb0441702445fa8da3b8c6d8b4d7cc12","reason":"Same source body in authored semantic page"},{"oldId":"b-7157aaac0a3d6002402db7eb","targetId":"b-7157aaac0a3d6002402db7eb","page":"reading-block-970b53e7e79c4671bc281774e3f84c15","operation":"move","beforeSHA256":"4483c8f9f6652225c781e9eb498f893d65bd3dccc727ff2acb7fa0f701fe6f85","afterSHA256":"4483c8f9f6652225c781e9eb498f893d65bd3dccc727ff2acb7fa0f701fe6f85","reason":"Same source body in authored semantic page"},{"oldId":"b-0ab5987587347ed09293ea5b","targetId":"b-0ab5987587347ed09293ea5b","page":"reading-block-970b53e7e79c4671bc281774e3f84c15","operation":"move","beforeSHA256":"deccd0b0c939eb01b26e8628bdb281705db261d358042039b0817933c206dd9a","afterSHA256":"deccd0b0c939eb01b26e8628bdb281705db261d358042039b0817933c206dd9a","reason":"Same source body in authored semantic page"},{"oldId":"b-ebfd721f0a93e92333b5e66b","targetId":"b-ebfd721f0a93e92333b5e66b","page":"reading-block-970b53e7e79c4671bc281774e3f84c15","operation":"move","beforeSHA256":"c2ae6c5aafb5da29ab93e099df04017256570cb2a632c5afcf16296d947e7bd1","afterSHA256":"c2ae6c5aafb5da29ab93e099df04017256570cb2a632c5afcf16296d947e7bd1","reason":"Same source body in authored semantic page"},{"oldId":"b-4d1e61287aed0de5eb4d51b4","targetId":"b-4d1e61287aed0de5eb4d51b4","page":"reading-block-970b53e7e79c4671bc281774e3f84c15","operation":"move","beforeSHA256":"ebfc750697e9d615a3139bc8a319bc09166bfa6f2dcbc9e9ca6750c3679fe2cc","afterSHA256":"ebfc750697e9d615a3139bc8a319bc09166bfa6f2dcbc9e9ca6750c3679fe2cc","reason":"Same source body in authored semantic page"},{"oldId":"b-e5c9c4b3d51e08b9e65d8dfd","targetId":"b-e5c9c4b3d51e08b9e65d8dfd","page":"reading-block-970b53e7e79c4671bc281774e3f84c15","operation":"move","beforeSHA256":"f2be5936c33e2934bcc39c01e35874c5c8d3084b103ed6d0dcafa947f60f0543","afterSHA256":"f2be5936c33e2934bcc39c01e35874c5c8d3084b103ed6d0dcafa947f60f0543","reason":"Same source body in authored semantic page"},{"oldId":"b-da0395486b31dd0afc2cec49","targetId":"b-da0395486b31dd0afc2cec49","page":"reading-block-1e9ce6ce90244f8f9ebc22b75fb1db8a","operation":"move","beforeSHA256":"cce462c877747e8be32b2988346907ac29fb5cc6f0b254315a0fc6494e7a56d2","afterSHA256":"cce462c877747e8be32b2988346907ac29fb5cc6f0b254315a0fc6494e7a56d2","reason":"Same source body in authored semantic page"},{"oldId":"b-4bfe7585f152d11e5508e7f1","targetId":"b-4bfe7585f152d11e5508e7f1","page":"reading-block-1e9ce6ce90244f8f9ebc22b75fb1db8a","operation":"move","beforeSHA256":"148d71251002fae8e91878cc8799d7805250fd71413320197fcacd22ecc7f244","afterSHA256":"148d71251002fae8e91878cc8799d7805250fd71413320197fcacd22ecc7f244","reason":"Same source body in authored semantic page"},{"oldId":"b-46427cddff9820bccf97332a","targetId":"b-46427cddff9820bccf97332a","page":"reading-block-1e9ce6ce90244f8f9ebc22b75fb1db8a","operation":"move","beforeSHA256":"849581a8299110662fdf9be48fc158b9fdd88d083fa6ee61078876520b3f983f","afterSHA256":"849581a8299110662fdf9be48fc158b9fdd88d083fa6ee61078876520b3f983f","reason":"Same source body in authored semantic page"},{"oldId":"b-a9b667e8118109d407f57b27","targetId":"b-a9b667e8118109d407f57b27","page":"reading-block-1e9ce6ce90244f8f9ebc22b75fb1db8a","operation":"move","beforeSHA256":"38c3d1925ae62e2ace24dbe2928de3a88f2c30814e46343fbb71733fe828e637","afterSHA256":"38c3d1925ae62e2ace24dbe2928de3a88f2c30814e46343fbb71733fe828e637","reason":"Same source body in authored semantic page"},{"oldId":"b-af6d8c5d0e7ace4e3e985d63","targetId":"b-af6d8c5d0e7ace4e3e985d63","page":"reading-block-3f06781e88514d50804f3ccb98dfb837","operation":"move","beforeSHA256":"3b6b4cf57eb65c21f2448b3f8fe5f18f61f35afb8e0c24dc8f2198082a709749","afterSHA256":"3b6b4cf57eb65c21f2448b3f8fe5f18f61f35afb8e0c24dc8f2198082a709749","reason":"Same source body in authored semantic page"},{"oldId":"b-5fe96b5eaf428cb10e39951a","targetId":"b-5fe96b5eaf428cb10e39951a","page":"reading-block-3f06781e88514d50804f3ccb98dfb837","operation":"move","beforeSHA256":"dab1e775bbe722f2ff40501c3fe9af28013fd16eecdb6fb5667a6a0d711547f3","afterSHA256":"dab1e775bbe722f2ff40501c3fe9af28013fd16eecdb6fb5667a6a0d711547f3","reason":"Same source body in authored semantic page"},{"oldId":"b-d77f96d737087e74bc1bdaac","targetId":"b-d77f96d737087e74bc1bdaac","page":"reading-block-3f06781e88514d50804f3ccb98dfb837","operation":"move","beforeSHA256":"eaf39b3c8b6c9e1fe40882fe5a4c71f1da47a23d77302c9afeb60d563776dd34","afterSHA256":"eaf39b3c8b6c9e1fe40882fe5a4c71f1da47a23d77302c9afeb60d563776dd34","reason":"Same source body in authored semantic page"},{"oldId":"b-dbe7273993607f1188c2ae2b","targetId":"b-dbe7273993607f1188c2ae2b","page":"reading-block-3f06781e88514d50804f3ccb98dfb837","operation":"move","beforeSHA256":"819ec8665bc0b217310168ce7d9474a46963c04e4a4df5c17d24c167a3696a42","afterSHA256":"819ec8665bc0b217310168ce7d9474a46963c04e4a4df5c17d24c167a3696a42","reason":"Same source body in authored semantic page"},{"oldId":"b-aa72e5dd684914d69ff99bd1","targetId":"b-aa72e5dd684914d69ff99bd1","page":"reading-block-3f06781e88514d50804f3ccb98dfb837","operation":"move","beforeSHA256":"fd47fe78c4c48c67be97d9fd2b1ebf960186c37faa1d1b30a00277b62bee7de8","afterSHA256":"fd47fe78c4c48c67be97d9fd2b1ebf960186c37faa1d1b30a00277b62bee7de8","reason":"Same source body in authored semantic page"},{"oldId":"b-7c090f280982f702032a9fb0","targetId":"b-7c090f280982f702032a9fb0","page":"reading-block-3f06781e88514d50804f3ccb98dfb837","operation":"move","beforeSHA256":"a4c984796646c7282f868779d1340c72a36696d18cad65cdeea7a54318a491ef","afterSHA256":"a4c984796646c7282f868779d1340c72a36696d18cad65cdeea7a54318a491ef","reason":"Same source body in authored semantic page"},{"oldId":"b-81970bdea2879d5aac095cb7","targetId":"b-81970bdea2879d5aac095cb7","page":"reading-block-3f06781e88514d50804f3ccb98dfb837","operation":"move","beforeSHA256":"41f1852c4a7076365057faf0c061910b1cdfb6467f1bac36e502721c13dde45b","afterSHA256":"41f1852c4a7076365057faf0c061910b1cdfb6467f1bac36e502721c13dde45b","reason":"Same source body in authored semantic page"},{"oldId":"b-69252b9e51210b8ca1f38ffe","targetId":"b-69252b9e51210b8ca1f38ffe","page":"reading-block-3f06781e88514d50804f3ccb98dfb837","operation":"move","beforeSHA256":"b6785550af1ca90eee39a779b30b699f296c304901d2e2543d8db5ce06e47a57","afterSHA256":"b6785550af1ca90eee39a779b30b699f296c304901d2e2543d8db5ce06e47a57","reason":"Same source body in authored semantic page"},{"oldId":"b-3470c0558934ed6d0f0ddecb","targetId":"b-3470c0558934ed6d0f0ddecb","page":"reading-block-3f06781e88514d50804f3ccb98dfb837","operation":"move","beforeSHA256":"8b3005e9f4ad6c069da988920a4232f225408f8e65d3d980260c4a0e52798a93","afterSHA256":"8b3005e9f4ad6c069da988920a4232f225408f8e65d3d980260c4a0e52798a93","reason":"Same source body in authored semantic page"},{"oldId":"b-3b4af1550132d2db06ab2b14","targetId":"b-3b4af1550132d2db06ab2b14","page":"reading-block-3f06781e88514d50804f3ccb98dfb837","operation":"move","beforeSHA256":"e4fbd3cc5c039b72d89b0a2031c48d06af898c459225192e70b941cc1bd85ba3","afterSHA256":"e4fbd3cc5c039b72d89b0a2031c48d06af898c459225192e70b941cc1bd85ba3","reason":"Same source body in authored semantic page"},{"oldId":"b-012aceb30f70af02dfdd718a","targetId":"b-012aceb30f70af02dfdd718a","page":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","operation":"move","beforeSHA256":"12458973f50270a4867cf8b929b412a686266651e3695504ad9aeb06ef86c583","afterSHA256":"12458973f50270a4867cf8b929b412a686266651e3695504ad9aeb06ef86c583","reason":"Same source body in authored semantic page"},{"oldId":"b-f1a33f8825c486e24e0caa00","targetId":"b-f1a33f8825c486e24e0caa00","page":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","operation":"move","beforeSHA256":"37a93759c7da0b218a5d25b8d9f9654151428d692807fcc07f32de837ca45f6c","afterSHA256":"37a93759c7da0b218a5d25b8d9f9654151428d692807fcc07f32de837ca45f6c","reason":"Same source body in authored semantic page"},{"oldId":"b-732ea94e6d6aea4cd578a52d","targetId":"b-732ea94e6d6aea4cd578a52d","page":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","operation":"move","beforeSHA256":"8c0d8fe3f3bd1c5b9c4d9d17580f053079b535e402fcff852d102dcd9007c575","afterSHA256":"8c0d8fe3f3bd1c5b9c4d9d17580f053079b535e402fcff852d102dcd9007c575","reason":"Same source body in authored semantic page"},{"oldId":"b-5d358366bb82a939a2918f5b","targetId":"b-5d358366bb82a939a2918f5b","page":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","operation":"move","beforeSHA256":"bea6e0a37315cff83f2d5d1cacc6416cd8aae1f4a53e23a6150c722a5eac1308","afterSHA256":"bea6e0a37315cff83f2d5d1cacc6416cd8aae1f4a53e23a6150c722a5eac1308","reason":"Same source body in authored semantic page"},{"oldId":"b-3db1c83cbbd8ef4837317436","targetId":"b-3db1c83cbbd8ef4837317436","page":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","operation":"move","beforeSHA256":"7e812a4497272d38634e578b8bd0e8f66f66ccee35529fd2ea5e3899e0b8b480","afterSHA256":"7e812a4497272d38634e578b8bd0e8f66f66ccee35529fd2ea5e3899e0b8b480","reason":"Same source body in authored semantic page"},{"oldId":"b-adfd9a3cd7c9b34c50893785","targetId":"b-adfd9a3cd7c9b34c50893785","page":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","operation":"move","beforeSHA256":"cc5aa9d0f22891080a75b6c0d8e433f164ff465926c8f5db44fdd1a0c2a05531","afterSHA256":"cc5aa9d0f22891080a75b6c0d8e433f164ff465926c8f5db44fdd1a0c2a05531","reason":"Same source body in authored semantic page"},{"oldId":"b-a44c778c88ed3dcc339363ef","targetId":"b-a44c778c88ed3dcc339363ef","page":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","operation":"move","beforeSHA256":"8b479070fd03af260b30cf0476763acf524f55b39eaa6a87e7214cff669b3f8b","afterSHA256":"8b479070fd03af260b30cf0476763acf524f55b39eaa6a87e7214cff669b3f8b","reason":"Same source body in authored semantic page"},{"oldId":"b-607e3d4965a16091362d15a3","targetId":"b-607e3d4965a16091362d15a3","page":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","operation":"move","beforeSHA256":"ae6ca5d7e71ae550cc2e2df9ab551122a48a6fcaba3ed1486ecabd8bbccdb35f","afterSHA256":"ae6ca5d7e71ae550cc2e2df9ab551122a48a6fcaba3ed1486ecabd8bbccdb35f","reason":"Same source body in authored semantic page"},{"oldId":"b-8a88020b05ac9539fe822dab","targetId":"b-8a88020b05ac9539fe822dab","page":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","operation":"move","beforeSHA256":"7808bba91f0e2321a53ca8958e318115a444f3bd016f2ed8a6952a5ec71c2a26","afterSHA256":"7808bba91f0e2321a53ca8958e318115a444f3bd016f2ed8a6952a5ec71c2a26","reason":"Same source body in authored semantic page"},{"oldId":"b-87a75ebb48efa9da5f06c232","targetId":"b-87a75ebb48efa9da5f06c232","page":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","operation":"move","beforeSHA256":"75f68373efc8a34e15a455992285e7d280b946965043dfaa156c584cda35d949","afterSHA256":"75f68373efc8a34e15a455992285e7d280b946965043dfaa156c584cda35d949","reason":"Same source body in authored semantic page"},{"oldId":"b-827fe282b426e573f1806da6","targetId":"b-827fe282b426e573f1806da6","page":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","operation":"move","beforeSHA256":"f0ddf36b69b86799d86babb0e641fdb13ec3a2a58adcf3ae012c7028fe734c9b","afterSHA256":"f0ddf36b69b86799d86babb0e641fdb13ec3a2a58adcf3ae012c7028fe734c9b","reason":"Same source body in authored semantic page"},{"oldId":"b-7feadc5cb8b4ba5cdd3236f4","targetId":"b-7feadc5cb8b4ba5cdd3236f4","page":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","operation":"move","beforeSHA256":"942008bcf103adbedfec9a2361085931a4e6cf9aa06dc31d01b67b0381bebe9e","afterSHA256":"942008bcf103adbedfec9a2361085931a4e6cf9aa06dc31d01b67b0381bebe9e","reason":"Same source body in authored semantic page"},{"oldId":"b-c1a4debb2b79031f433ba529","targetId":"b-c1a4debb2b79031f433ba529","page":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","operation":"move","beforeSHA256":"124c489caf1dfe4c6d09f247ba4c6c45459c9fd05c6f9beac00f992067ee4c8d","afterSHA256":"124c489caf1dfe4c6d09f247ba4c6c45459c9fd05c6f9beac00f992067ee4c8d","reason":"Same source body in authored semantic page"},{"oldId":"b-57a46065cec8db752c4fbbb0","targetId":"b-57a46065cec8db752c4fbbb0","page":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","operation":"move","beforeSHA256":"57ae1ee84a659784825cfa14d037834fda286e5bc4f51fc82e9f91925abbfee7","afterSHA256":"57ae1ee84a659784825cfa14d037834fda286e5bc4f51fc82e9f91925abbfee7","reason":"Same source body in authored semantic page"},{"oldId":"b-c1cd3fad990a0cffc1543bca","targetId":"b-c1cd3fad990a0cffc1543bca","page":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","operation":"move","beforeSHA256":"6db5b262640b1505ffbad295002576f0b7edf1e49c256c3c6ae3305266754f2c","afterSHA256":"6db5b262640b1505ffbad295002576f0b7edf1e49c256c3c6ae3305266754f2c","reason":"Same source body in authored semantic page"},{"oldId":"b-ee61763cbd9a561870cca7d5","targetId":"b-ee61763cbd9a561870cca7d5","page":"reading-block-610939aefa594e76b13487539aa1a7bc","operation":"move","beforeSHA256":"66ba08cf77d1cbbbeb8ed4fc4c3e37f64116f0ba139f3c60e32d3712a52bddce","afterSHA256":"66ba08cf77d1cbbbeb8ed4fc4c3e37f64116f0ba139f3c60e32d3712a52bddce","reason":"Same source body in authored semantic page"},{"oldId":"b-526c45a1f1f02fcaf72df152","targetId":"b-526c45a1f1f02fcaf72df152","page":"reading-block-610939aefa594e76b13487539aa1a7bc","operation":"move","beforeSHA256":"21dd7587943978b2ff3e3ee3dfefaab4cf0eb4ec55b5baea03ebcd5cd04add70","afterSHA256":"21dd7587943978b2ff3e3ee3dfefaab4cf0eb4ec55b5baea03ebcd5cd04add70","reason":"Same source body in authored semantic page"},{"oldId":"b-9695b60d7ada0c7f2bbc70d8","targetId":"b-9695b60d7ada0c7f2bbc70d8","page":"reading-block-610939aefa594e76b13487539aa1a7bc","operation":"move","beforeSHA256":"373ef2e423a4d5b83cca3f1738be7bc797a1c8961cd07b22f5545780eb1065ab","afterSHA256":"373ef2e423a4d5b83cca3f1738be7bc797a1c8961cd07b22f5545780eb1065ab","reason":"Same source body in authored semantic page"},{"oldId":"b-94f828281501e816e9b3f0f9","targetId":"b-94f828281501e816e9b3f0f9","page":"reading-block-610939aefa594e76b13487539aa1a7bc","operation":"move","beforeSHA256":"15ddd6aaf72513f88eb93ad217c64c61ae856156905d30d26aec16d8855c6f63","afterSHA256":"15ddd6aaf72513f88eb93ad217c64c61ae856156905d30d26aec16d8855c6f63","reason":"Same source body in authored semantic page"},{"oldId":"b-74b0c45541848768f039e80d","targetId":"b-74b0c45541848768f039e80d","page":"reading-block-610939aefa594e76b13487539aa1a7bc","operation":"move","beforeSHA256":"906139e8c11b9aafe6949cd19c9dfda4949ec16ce059625cbcde4ea933b61d5c","afterSHA256":"906139e8c11b9aafe6949cd19c9dfda4949ec16ce059625cbcde4ea933b61d5c","reason":"Same source body in authored semantic page"},{"oldId":"b-625684de1a33a26de256251f","targetId":"b-625684de1a33a26de256251f","page":"reading-block-cd6137d9487f49fb9c6601c0166f7658","operation":"move","beforeSHA256":"99fc1b638b1f208c22e206c213955fff1c1a0ad0f8649fba049d94e3bc2a4064","afterSHA256":"99fc1b638b1f208c22e206c213955fff1c1a0ad0f8649fba049d94e3bc2a4064","reason":"Same source body in authored semantic 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page"},{"oldId":"b-a891ce933ab2c95cc0a99b15","targetId":"b-a891ce933ab2c95cc0a99b15","page":"reading-block-a03e43f6f64444c891fe88bc42fb1798","operation":"move","beforeSHA256":"640df134a9e15a2ee3b6e15adfe56b56216f0113065cb39db8de3cff1ffae5b6","afterSHA256":"640df134a9e15a2ee3b6e15adfe56b56216f0113065cb39db8de3cff1ffae5b6","reason":"Same source body in authored semantic page"},{"oldId":"b-9e8310c0ff8503549211fbfa","targetId":"b-9e8310c0ff8503549211fbfa","page":"reading-block-a03e43f6f64444c891fe88bc42fb1798","operation":"move","beforeSHA256":"7bbe824ac04c9ea2f884e59f0dd64895ba6168fb7bfd9ca6faafa40f9d8347ff","afterSHA256":"7bbe824ac04c9ea2f884e59f0dd64895ba6168fb7bfd9ca6faafa40f9d8347ff","reason":"Same source body in authored semantic 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学习信号、表示与迁移","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-bfcb5b95839aacf2e1cdca01","nextBlock":"b-c4a46d0105c74ff8823e95db","prerequisites":[{"id":"b-a4d192faeb70f095859c5493","url":"#b-a4d192faeb70f095859c5493","role":"section-title"},{"id":"b-573297ee66a10499bf1088e0","url":"#b-573297ee66a10499bf1088e0","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-c4a46d0105c74ff8823e95db","type":"p","scope":"block-02af50375250442ead9fce7dbfa437d9","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-c4a46d0105c74ff8823e95db","content":"从已有分类器出发，依次问：训练答案从哪里来，两张视图如何构成训练题，遮挡图像怎样提供目标，学到的表示又怎样用于新任务。先顺着同源视图、队列、16块位置图读完这条线。多设备更新与分片状态已移入[第六讲](https://deepnote.com/project/2ff4b87b-2904-4b9c-b9e9-bdbd72962691/notebook/e2c2fce2f81b40d59356bfe7a63361b0?utm_source=openai&utm_medium=mcp&utm_campaign=openaimcp&utm_content=e2c2fce2f81b40d59356bfe7a63361b0&utm_term=get_notebook)，不构成学习对比与重建的前置要求。","sha256":"6852c6524eab3681a07e1fa582dd37c773e93be372b9ed5e42180b725c64b6ab","chapter":{"id":"course","title":"CLS 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08](https://deepnote.com/project/38755e4e-23f6-4f5f-8c68-8a2e4114b1c1/notebook/b5ba27f2c5ba4ec0922208a7d5dc80a4)比较重建与冻结读出；[LAB 01](https://deepnote.com/project/38755e4e-23f6-4f5f-8c68-8a2e4114b1c1/notebook/4dd8605ed9904820919ea9e13d9e7d7c)固定表示、只改变标签预算与读出。只有当你要改参数时，再接[LAB 02](https://deepnote.com/project/38755e4e-23f6-4f5f-8c68-8a2e4114b1c1/notebook/4bd450d54870432db91c80a4df563b8e)。","sha256":"27b7003cee66c39eb2b141a9867e6c558301ce04595546ad49df1eef8e69fc42","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-opening","title":"CLS 01 · 学习信号、表示与迁移","number":1},"sectionTitle":"CLS 01 · 学习信号、表示与迁移","currentQuestion":"CLS 01 · 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06](https://deepnote.com/project/38755e4e-23f6-4f5f-8c68-8a2e4114b1c1/notebook/c0645a4db6e04188ab5b119e87c53bed)；这些是查疑问的入口，不是额外必读清单。","sha256":"67c8801db3d6f21caa23f559a269ffaec9e9386f82847d2fba676aacaf9a3bbc","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-opening","title":"CLS 01 · 学习信号、表示与迁移","number":1},"sectionTitle":"CLS 01 · 学习信号、表示与迁移","currentQuestion":"CLS 01 · 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同一段文字，两种可见条件","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-18b06bc07d2e97f3f95ed840","nextBlock":"b-c393288510e0e443f6c7a782","prerequisites":[{"id":"b-0177316130ac57f2bbe59f4f","url":"#b-0177316130ac57f2bbe59f4f","role":"section-title"},{"id":"b-7c8520b068cec0c5dcc3dd3a","url":"#b-7c8520b068cec0c5dcc3dd3a","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-c393288510e0e443f6c7a782","type":"p","scope":"block-58de0ce82f8e4a428874633279e5fdc1","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-c393288510e0e443f6c7a782","content":"**回到从左到右预测：一个输出 token，成为下一步条件。** 使用时，先由 `The / red / cup` 预测一个 token；选出 `is` 后，将它接到前文，再预测 `on`。训练时原文已经给出目标，使用时接入的是模型选出的 token，这两种过程要区分。","sha256":"5bfb5f2e539b571f55a624b06e0a37c416ea81dd1d2898a6ce6bd099e6c66bcb","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-7c1d8bd9378e4cc0ba38be2e7203669a","title":"2. 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有了很多训练题，怎样把它们学完？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-fb1b2c94f9c6a3dc7e2fbccb","nextBlock":"b-2b9501069082f3dad2e6c8f9","prerequisites":[{"id":"b-fb1b2c94f9c6a3dc7e2fbccb","url":"#b-fb1b2c94f9c6a3dc7e2fbccb","role":"section-title"}],"relatedBlocks":[]},{"id":"b-2b9501069082f3dad2e6c8f9","type":"p","scope":"block-148c269fd9504033921b7fd7605ef3bc","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-2b9501069082f3dad2e6c8f9","content":"[训练目标也在分配计算](/course/blocks/objective-and-compute-interface.html)解释这层接口。梯度归并、分片与通信的算例已集中到[第六讲：训练目标与资源账本](https://deepnote.com/project/2ff4b87b-2904-4b9c-b9e9-bdbd72962691/notebook/e2c2fce2f81b40d59356bfe7a63361b0?utm_source=openai&utm_medium=mcp&utm_campaign=openaimcp&utm_content=e2c2fce2f81b40d59356bfe7a63361b0&utm_term=get_notebook)。接下来继续问：同一幅图的两种观察，怎样构成一个可学习的训练题？","sha256":"7078a4a8969adefdd5884b55833df51bfcb716af6b48f9573975e6952011536c","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-eb87fdbf17ad4c73b4dee3f786bd74d9","title":"3. 有了很多训练题，怎样把它们学完？","number":4},"sectionTitle":"3. 有了很多训练题，怎样把它们学完？","currentQuestion":"3. 有了很多训练题，怎样把它们学完？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-d098b95d5a28d6a8e49fa861","nextBlock":null,"prerequisites":[{"id":"b-fb1b2c94f9c6a3dc7e2fbccb","url":"#b-fb1b2c94f9c6a3dc7e2fbccb","role":"section-title"},{"id":"b-d098b95d5a28d6a8e49fa861","url":"#b-d098b95d5a28d6a8e49fa861","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-4bc120f2b17480fdcaf5e718","type":"h3","scope":"block-d43dc7bd31584fc38767f5163e468b35","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-4bc120f2b17480fdcaf5e718","content":"### 继续研究训练资源","sha256":"cccd57ee8447338e9ca96587f53049117161d2807374cacc041d52c10a1954de","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 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让昂贵编码器只读取可见块。","sha256":"845b185653aaa1cea61033be45db123d57bfb572095debd8d944b51f68a66263","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-d43dc7bd31584fc38767f5163e468b35","title":"继续研究训练资源","number":5},"sectionTitle":"继续研究训练资源","currentQuestion":"继续研究训练资源","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-4bc120f2b17480fdcaf5e718","nextBlock":"b-837aa3384b6eeaa990f185bd","prerequisites":[{"id":"b-4bc120f2b17480fdcaf5e718","url":"#b-4bc120f2b17480fdcaf5e718","role":"section-title"}],"relatedBlocks":[]},{"id":"b-837aa3384b6eeaa990f185bd","type":"pre","scope":"block-b8b61a497430401ba647f8a4b72d5bf1","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-837aa3384b6eeaa990f185bd","content":"```\n# 多设备更新示例已迁至第六讲：https://deepnote.com/project/2ff4b87b-2904-4b9c-b9e9-bdbd72962691/notebook/e2c2fce2f81b40d59356bfe7a63361b0?utm_source=openai&utm_medium=mcp&utm_campaign=openaimcp&utm_content=e2c2fce2f81b40d59356bfe7a63361b0&utm_term=get_notebook\n```","sha256":"3de99c258846469ef191cbb45e6294fa53033691961bd2c3ca5f6b7197f4c5e1","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-d43dc7bd31584fc38767f5163e468b35","title":"继续研究训练资源","number":5},"sectionTitle":"继续研究训练资源","currentQuestion":"继续研究训练资源","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-0ea1196819fdc57ea3f6405e","nextBlock":null,"prerequisites":[{"id":"b-4bc120f2b17480fdcaf5e718","url":"#b-4bc120f2b17480fdcaf5e718","role":"section-title"},{"id":"b-0ea1196819fdc57ea3f6405e","url":"#b-0ea1196819fdc57ea3f6405e","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-4ee9e4724d06f2ddbf670a95","type":"h3","scope":"block-fddf2f63720746ee88a0067c645b8993","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-4ee9e4724d06f2ddbf670a95","content":"### 计算条件怎样影响训练题","sha256":"63535e743d945191ab5f4226ed4ef44ac877530cb6e7f5a3148224619464cf13","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 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第一条视觉路线：同一图像的两个视图","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-348e0b54ff49ccd210a23ed3","nextBlock":"b-a68de0423d23f176506ac730","prerequisites":[{"id":"b-348e0b54ff49ccd210a23ed3","url":"#b-348e0b54ff49ccd210a23ed3","role":"section-title"}],"relatedBlocks":[]},{"id":"b-a68de0423d23f176506ac730","type":"p","scope":"block-8db40ec3f2d94edfb04870b169e18a55","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-a68de0423d23f176506ac730","content":"![源场景](/course/knowledge-assets/3047dd45017c7334f22a02f9.jpg)","sha256":"68f9270137fd802a5d082f9d45f11178c725bb357fba0a10b3ba48975998a7dc","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-cfb4a17d6107418597a7692239b5d65c","title":"4. 第一条视觉路线：同一图像的两个视图","number":7},"sectionTitle":"4. 第一条视觉路线：同一图像的两个视图","currentQuestion":"4. 第一条视觉路线：同一图像的两个视图","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-baa86a76383656428b16b809","nextBlock":"b-1326b022e783a53dfa8764a6","prerequisites":[{"id":"b-348e0b54ff49ccd210a23ed3","url":"#b-348e0b54ff49ccd210a23ed3","role":"section-title"},{"id":"b-baa86a76383656428b16b809","url":"#b-baa86a76383656428b16b809","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-1326b022e783a53dfa8764a6","type":"p","scope":"block-8db40ec3f2d94edfb04870b169e18a55","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-1326b022e783a53dfa8764a6","content":"**裁剪 A**","sha256":"51714f3758011a82cced6e4570aa54d622a81520ab7e4527e330509acd2f4c61","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-cfb4a17d6107418597a7692239b5d65c","title":"4. 第一条视觉路线：同一图像的两个视图","number":7},"sectionTitle":"4. 第一条视觉路线：同一图像的两个视图","currentQuestion":"4. 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第一条视觉路线：同一图像的两个视图","currentQuestion":"4. 第一条视觉路线：同一图像的两个视图","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-a54f864c04fcd8d64273658d","nextBlock":"b-849bfb6f36b48f2fd4bb5962","prerequisites":[{"id":"b-348e0b54ff49ccd210a23ed3","url":"#b-348e0b54ff49ccd210a23ed3","role":"section-title"},{"id":"b-baa86a76383656428b16b809","url":"#b-baa86a76383656428b16b809","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-849bfb6f36b48f2fd4bb5962","type":"p","scope":"block-8db40ec3f2d94edfb04870b169e18a55","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-849bfb6f36b48f2fd4bb5962","content":"同一源场景的裁剪与变换，用于观察训练配对；图中的相似关系是任务设定。","sha256":"930eb6a0387e2fd5859117cf1ee33a669855f853f8ff0ad88ee5b9f233100ebd","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-cfb4a17d6107418597a7692239b5d65c","title":"4. 第一条视觉路线：同一图像的两个视图","number":7},"sectionTitle":"4. 第一条视觉路线：同一图像的两个视图","currentQuestion":"4. 第一条视觉路线：同一图像的两个视图","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-36576acb7a6e43d5f7b42eb5","nextBlock":"b-2864a809f65c46840b393295","prerequisites":[{"id":"b-348e0b54ff49ccd210a23ed3","url":"#b-348e0b54ff49ccd210a23ed3","role":"section-title"},{"id":"b-baa86a76383656428b16b809","url":"#b-baa86a76383656428b16b809","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-2864a809f65c46840b393295","type":"p","scope":"block-8db40ec3f2d94edfb04870b169e18a55","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-2864a809f65c46840b393295","content":"对一张桌面照片做两种变换，产生查询视图 q 与对应的 key 视图 k⁺。同一照片提供正配对，不要求先写“杯子”标签。来自另一张照片的 key 可以进入比较字典，但它也可能拍了同一种杯子；“不同图像”不等于“不同语义类别”。","sha256":"31d9fe67069994fb07471109c2e5b348112231d796845fb8aa8469c3fb9d9558","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-cfb4a17d6107418597a7692239b5d65c","title":"4. 第一条视觉路线：同一图像的两个视图","number":7},"sectionTitle":"4. 第一条视觉路线：同一图像的两个视图","currentQuestion":"4. 第一条视觉路线：同一图像的两个视图","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-849bfb6f36b48f2fd4bb5962","nextBlock":"b-5bf2b6de0924e43b4ccb33b1","prerequisites":[{"id":"b-348e0b54ff49ccd210a23ed3","url":"#b-348e0b54ff49ccd210a23ed3","role":"section-title"},{"id":"b-baa86a76383656428b16b809","url":"#b-baa86a76383656428b16b809","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-5bf2b6de0924e43b4ccb33b1","type":"p","scope":"block-8db40ec3f2d94edfb04870b169e18a55","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-5bf2b6de0924e43b4ccb33b1","content":"对归一化向量，点积可作相似度。MoCo 的目标让正确配对在字典里得到较高相对分数：","sha256":"79a0a26dc6514efcd45358f57af8c7edf10791af520dcf9fc0571f7d5bff4367","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-cfb4a17d6107418597a7692239b5d65c","title":"4. 第一条视觉路线：同一图像的两个视图","number":7},"sectionTitle":"4. 第一条视觉路线：同一图像的两个视图","currentQuestion":"4. 第一条视觉路线：同一图像的两个视图","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-2864a809f65c46840b393295","nextBlock":"b-109550c3477545ccedc7e67e","prerequisites":[{"id":"b-348e0b54ff49ccd210a23ed3","url":"#b-348e0b54ff49ccd210a23ed3","role":"section-title"},{"id":"b-baa86a76383656428b16b809","url":"#b-baa86a76383656428b16b809","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-109550c3477545ccedc7e67e","type":"p","scope":"block-8db40ec3f2d94edfb04870b169e18a55","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-109550c3477545ccedc7e67e","content":"$\\ell=-\\log\\frac{\\exp(q^\\top k^+/\\tau)}{\\exp(q^\\top k^+/\\tau)+\\sum_{k^-}\\exp(q^\\top k^-/\\tau)}.$","sha256":"eb72beb8e84de9ca3757fe53cf2401208fa2720a7d836a45a86322915aa7675f","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-cfb4a17d6107418597a7692239b5d65c","title":"4. 第一条视觉路线：同一图像的两个视图","number":7},"sectionTitle":"4. 第一条视觉路线：同一图像的两个视图","currentQuestion":"4. 第一条视觉路线：同一图像的两个视图","sourceSlides":[],"knowledgeBlock":null,"formulas":[{"latex":"\\ell=-\\log\\frac{\\exp(q^\\top k^+/\\tau)}{\\exp(q^\\top k^+/\\tau)+\\sum_{k^-}\\exp(q^\\top k^-/\\tau)}.","definitionContext":"4. 第一条视觉路线：同一图像的两个视图"}],"previousBlock":"b-5bf2b6de0924e43b4ccb33b1","nextBlock":"b-c1db9528693d18612db64714","prerequisites":[{"id":"b-348e0b54ff49ccd210a23ed3","url":"#b-348e0b54ff49ccd210a23ed3","role":"section-title"},{"id":"b-baa86a76383656428b16b809","url":"#b-baa86a76383656428b16b809","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-c1db9528693d18612db64714","type":"p","scope":"block-8db40ec3f2d94edfb04870b169e18a55","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-c1db9528693d18612db64714","content":"τ 决定分数进入 softmax 后的尖锐程度。目标关心的不是所有向量无条件相同，而是指定正配对相对候选更容易找回。[MoCo](https://arxiv.org/abs/1911.05722)","sha256":"32c5bcb9a923fc54c9be095311b4a2374c2bb0d188b6e96194d3ad9d53cccadb","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-cfb4a17d6107418597a7692239b5d65c","title":"4. 第一条视觉路线：同一图像的两个视图","number":7},"sectionTitle":"4. 第一条视觉路线：同一图像的两个视图","currentQuestion":"4. 第一条视觉路线：同一图像的两个视图","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-109550c3477545ccedc7e67e","nextBlock":"b-3bb75502cc0fb243177af6c0","prerequisites":[{"id":"b-348e0b54ff49ccd210a23ed3","url":"#b-348e0b54ff49ccd210a23ed3","role":"section-title"},{"id":"b-baa86a76383656428b16b809","url":"#b-baa86a76383656428b16b809","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-3bb75502cc0fb243177af6c0","type":"p","scope":"block-8db40ec3f2d94edfb04870b169e18a55","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-3bb75502cc0fb243177af6c0","content":"**看图后先预测：** 若两个裁剪都保留杯子但桌面背景不同，系统被要求忽略什么？若其中一张只剩桌面，正配对又要求了什么？","sha256":"cc6584cebd8f61b51745fbb097a274ddeb0441702445fa8da3b8c6d8b4d7cc12","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-cfb4a17d6107418597a7692239b5d65c","title":"4. 第一条视觉路线：同一图像的两个视图","number":7},"sectionTitle":"4. 第一条视觉路线：同一图像的两个视图","currentQuestion":"4. 第一条视觉路线：同一图像的两个视图","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-c1db9528693d18612db64714","nextBlock":null,"prerequisites":[{"id":"b-348e0b54ff49ccd210a23ed3","url":"#b-348e0b54ff49ccd210a23ed3","role":"section-title"},{"id":"b-baa86a76383656428b16b809","url":"#b-baa86a76383656428b16b809","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-7157aaac0a3d6002402db7eb","type":"h3","scope":"block-970b53e7e79c4671bc281774e3f84c15","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-7157aaac0a3d6002402db7eb","content":"### 活动 B：队列身份与参数更新分开看","sha256":"4483c8f9f6652225c781e9eb498f893d65bd3dccc727ff2acb7fa0f701fe6f85","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-970b53e7e79c4671bc281774e3f84c15","title":"活动 B：队列身份与参数更新分开看","number":8},"sectionTitle":"活动 B：队列身份与参数更新分开看","currentQuestion":"活动 B：队列身份与参数更新分开看","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":null,"nextBlock":"b-0ab5987587347ed09293ea5b","prerequisites":[{"id":"b-0ab5987587347ed09293ea5b","url":"#b-0ab5987587347ed09293ea5b","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-0ab5987587347ed09293ea5b","type":"p","scope":"block-970b53e7e79c4671bc281774e3f84c15","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-0ab5987587347ed09293ea5b","content":"八个槽位 `[a0,a1,b0,b1,c0,c1,d0,d1]` 加入 `[e0,e1]` 后，最老的两项离开。保存的是旧特征，不是旧图片完整计算图。下面代码只追踪身份和EMA，不训练图像模型。","sha256":"deccd0b0c939eb01b26e8628bdb281705db261d358042039b0817933c206dd9a","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-970b53e7e79c4671bc281774e3f84c15","title":"活动 B：队列身份与参数更新分开看","number":8},"sectionTitle":"活动 B：队列身份与参数更新分开看","currentQuestion":"活动 B：队列身份与参数更新分开看","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-7157aaac0a3d6002402db7eb","nextBlock":"b-ebfd721f0a93e92333b5e66b","prerequisites":[{"id":"b-7157aaac0a3d6002402db7eb","url":"#b-7157aaac0a3d6002402db7eb","role":"section-title"}],"relatedBlocks":[]},{"id":"b-ebfd721f0a93e92333b5e66b","type":"p","scope":"block-970b53e7e79c4671bc281774e3f84c15","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-ebfd721f0a93e92333b5e66b","content":"先预测第二批 `[f0,f1]` 入队后剩下谁，再算m=0.9时key参数从[0,2]向query [2,4]靠近两次的结果：[0.38,2.38]。平均的是网络参数，旧队列向量不会自动刷新。","sha256":"c2ae6c5aafb5da29ab93e099df04017256570cb2a632c5afcf16296d947e7bd1","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-970b53e7e79c4671bc281774e3f84c15","title":"活动 B：队列身份与参数更新分开看","number":8},"sectionTitle":"活动 B：队列身份与参数更新分开看","currentQuestion":"活动 B：队列身份与参数更新分开看","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-0ab5987587347ed09293ea5b","nextBlock":"b-4d1e61287aed0de5eb4d51b4","prerequisites":[{"id":"b-7157aaac0a3d6002402db7eb","url":"#b-7157aaac0a3d6002402db7eb","role":"section-title"},{"id":"b-0ab5987587347ed09293ea5b","url":"#b-0ab5987587347ed09293ea5b","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-4d1e61287aed0de5eb4d51b4","type":"p","scope":"block-970b53e7e79c4671bc281774e3f84c15","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-4d1e61287aed0de5eb4d51b4","content":"完整解释归并到 [队列保存的是带历史身份的 key](/course/blocks/moco-key-queue-identity.html)、[梯度更新和 EMA 更新作用在不同地方](/course/blocks/moco-two-parameter-updates.html)；指着画面走一步用 [P17 本页说明](/course/pages/l3-r2-p17.html)。想看真正图像训练，再选 [LAB 07 · MoCo：历史 key、队列与两种更新](https://deepnote.com/workspace/ise3309jingao-5ba66b0a-4283-4f5a-ae06-3f68d3201e99/project/38755e4e-23f6-4f5f-8c68-8a2e4114b1c1/notebook/0d1b8f6fbf6a476c93ffcc169f2ec1f4?utm_source=openai&utm_medium=mcp&utm_campaign=openaimcp&utm_content=0d1b8f6fbf6a476c93ffcc169f2ec1f4&utm_term=get_notebook)。","sha256":"ebfc750697e9d615a3139bc8a319bc09166bfa6f2dcbc9e9ca6750c3679fe2cc","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-970b53e7e79c4671bc281774e3f84c15","title":"活动 B：队列身份与参数更新分开看","number":8},"sectionTitle":"活动 B：队列身份与参数更新分开看","currentQuestion":"活动 B：队列身份与参数更新分开看","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-ebfd721f0a93e92333b5e66b","nextBlock":"b-e5c9c4b3d51e08b9e65d8dfd","prerequisites":[{"id":"b-7157aaac0a3d6002402db7eb","url":"#b-7157aaac0a3d6002402db7eb","role":"section-title"},{"id":"b-0ab5987587347ed09293ea5b","url":"#b-0ab5987587347ed09293ea5b","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-e5c9c4b3d51e08b9e65d8dfd","type":"pre","scope":"block-f1ec258c1fdf4a93a17b3e1df63f5a70","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-e5c9c4b3d51e08b9e65d8dfd","content":"```\n# 独立 CPU 机制；追踪特征身份，不进行图像模型训练。\nfrom collections import deque\nqueue = deque(['a0','a1','b0','b1','c0','c1','d0','d1'], maxlen=8)\nm = 0.9\nkey_theta = [0.0,2.0]\nquery_theta = [2.0,4.0]\nprint('更新前:', list(queue))\nfor batch in (['e0','e1'], ['f0','f1']):\n    key_theta = [m*k+(1-m)*q for k,q in zip(key_theta,query_theta)]\n    queue.extend(batch)\n    print('加入',batch,'→',list(queue),'key参数',[round(x,4) for x in key_theta])\nassert list(queue)==['c0','c1','d0','d1','e0','e1','f0','f1']\nassert all(abs(a-b)<1e-12 for a,b in zip(key_theta,[0.38,2.38]))\n```","sha256":"f2be5936c33e2934bcc39c01e35874c5c8d3084b103ed6d0dcafa947f60f0543","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-970b53e7e79c4671bc281774e3f84c15","title":"活动 B：队列身份与参数更新分开看","number":8},"sectionTitle":"活动 B：队列身份与参数更新分开看","currentQuestion":"活动 B：队列身份与参数更新分开看","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-4d1e61287aed0de5eb4d51b4","nextBlock":null,"prerequisites":[{"id":"b-7157aaac0a3d6002402db7eb","url":"#b-7157aaac0a3d6002402db7eb","role":"section-title"},{"id":"b-0ab5987587347ed09293ea5b","url":"#b-0ab5987587347ed09293ea5b","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-da0395486b31dd0afc2cec49","type":"h3","scope":"block-1e9ce6ce90244f8f9ebc22b75fb1db8a","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-da0395486b31dd0afc2cec49","content":"### 同一目标可以采用不同的候选组织","sha256":"cce462c877747e8be32b2988346907ac29fb5cc6f0b254315a0fc6494e7a56d2","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 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给出相反直觉也可能出现的实际读出结果。","sha256":"849581a8299110662fdf9be48fc158b9fdd88d083fa6ee61078876520b3f983f","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-1e9ce6ce90244f8f9ebc22b75fb1db8a","title":"同一目标可以采用不同的候选组织","number":9},"sectionTitle":"同一目标可以采用不同的候选组织","currentQuestion":"同一目标可以采用不同的候选组织","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-4bfe7585f152d11e5508e7f1","nextBlock":"b-a9b667e8118109d407f57b27","prerequisites":[{"id":"b-da0395486b31dd0afc2cec49","url":"#b-da0395486b31dd0afc2cec49","role":"section-title"},{"id":"b-4bfe7585f152d11e5508e7f1","url":"#b-4bfe7585f152d11e5508e7f1","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-a9b667e8118109d407f57b27","type":"p","scope":"block-1e9ce6ce90244f8f9ebc22b75fb1db8a","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-a9b667e8118109d407f57b27","content":"想深读此线，只需继续 [CLS 05 · 对比学习：视图、投影与历史字典](https://deepnote.com/workspace/ise3309jingao-5ba66b0a-4283-4f5a-ae06-3f68d3201e99/project/38755e4e-23f6-4f5f-8c68-8a2e4114b1c1/notebook/b8320404134f4a2e858ccfe7d50a71d3?utm_source=openai&utm_medium=mcp&utm_campaign=openaimcp&utm_content=b8320404134f4a2e858ccfe7d50a71d3&utm_term=get_notebook)；暂时不必再从所有Notebook目录重新选择。","sha256":"38c3d1925ae62e2ace24dbe2928de3a88f2c30814e46343fbb71733fe828e637","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 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第二条视觉路线：只看四块，预测其余位置","currentQuestion":"5. 第二条视觉路线：只看四块，预测其余位置","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-af6d8c5d0e7ace4e3e985d63","nextBlock":"b-d77f96d737087e74bc1bdaac","prerequisites":[{"id":"b-af6d8c5d0e7ace4e3e985d63","url":"#b-af6d8c5d0e7ace4e3e985d63","role":"section-title"}],"relatedBlocks":[]},{"id":"b-d77f96d737087e74bc1bdaac","type":"p","scope":"block-fdd3ba8228064e708e554a6bf0bc3239","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-d77f96d737087e74bc1bdaac","content":"![4×4，位置 0–15](/course/knowledge-assets/a3e27515290178f1ab6a68b1.jpg)","sha256":"eaf39b3c8b6c9e1fe40882fe5a4c71f1da47a23d77302c9afeb60d563776dd34","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-3f06781e88514d50804f3ccb98dfb837","title":"5. 第二条视觉路线：只看四块，预测其余位置","number":10},"sectionTitle":"5. 第二条视觉路线：只看四块，预测其余位置","currentQuestion":"5. 第二条视觉路线：只看四块，预测其余位置","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-5fe96b5eaf428cb10e39951a","nextBlock":"b-dbe7273993607f1188c2ae2b","prerequisites":[{"id":"b-af6d8c5d0e7ace4e3e985d63","url":"#b-af6d8c5d0e7ace4e3e985d63","role":"section-title"},{"id":"b-5fe96b5eaf428cb10e39951a","url":"#b-5fe96b5eaf428cb10e39951a","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-dbe7273993607f1188c2ae2b","type":"p","scope":"block-fdd3ba8228064e708e554a6bf0bc3239","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-dbe7273993607f1188c2ae2b","content":"**仅位置 0/3/9/14 可见**","sha256":"819ec8665bc0b217310168ce7d9474a46963c04e4a4df5c17d24c167a3696a42","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-3f06781e88514d50804f3ccb98dfb837","title":"5. 第二条视觉路线：只看四块，预测其余位置","number":10},"sectionTitle":"5. 第二条视觉路线：只看四块，预测其余位置","currentQuestion":"5. 第二条视觉路线：只看四块，预测其余位置","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-d77f96d737087e74bc1bdaac","nextBlock":"b-aa72e5dd684914d69ff99bd1","prerequisites":[{"id":"b-af6d8c5d0e7ace4e3e985d63","url":"#b-af6d8c5d0e7ace4e3e985d63","role":"section-title"},{"id":"b-5fe96b5eaf428cb10e39951a","url":"#b-5fe96b5eaf428cb10e39951a","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-aa72e5dd684914d69ff99bd1","type":"p","scope":"block-fdd3ba8228064e708e554a6bf0bc3239","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-aa72e5dd684914d69ff99bd1","content":"![仅位置 0/3/9/14 可见](/course/knowledge-assets/1b0dd8453a17629d0f9bf823.jpg)","sha256":"fd47fe78c4c48c67be97d9fd2b1ebf960186c37faa1d1b30a00277b62bee7de8","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-3f06781e88514d50804f3ccb98dfb837","title":"5. 第二条视觉路线：只看四块，预测其余位置","number":10},"sectionTitle":"5. 第二条视觉路线：只看四块，预测其余位置","currentQuestion":"5. 第二条视觉路线：只看四块，预测其余位置","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-dbe7273993607f1188c2ae2b","nextBlock":"b-7c090f280982f702032a9fb0","prerequisites":[{"id":"b-af6d8c5d0e7ace4e3e985d63","url":"#b-af6d8c5d0e7ace4e3e985d63","role":"section-title"},{"id":"b-5fe96b5eaf428cb10e39951a","url":"#b-5fe96b5eaf428cb10e39951a","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-7c090f280982f702032a9fb0","type":"p","scope":"block-fdd3ba8228064e708e554a6bf0bc3239","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-7c090f280982f702032a9fb0","content":"16 块位置示意：可见位置为 0、3、9、14；其余是要预测的位置。完整源图提供目标，图中不展示虚构模型补全。","sha256":"a4c984796646c7282f868779d1340c72a36696d18cad65cdeea7a54318a491ef","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-3f06781e88514d50804f3ccb98dfb837","title":"5. 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如果把相同四块的位置信息拿走，解码器还知道它们来自左上还是右下吗？把可见集合改为相邻四块，对推测全图会有什么影响？","sha256":"b6785550af1ca90eee39a779b30b699f296c304901d2e2543d8db5ce06e47a57","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-3f06781e88514d50804f3ccb98dfb837","title":"5. 第二条视觉路线：只看四块，预测其余位置","number":10},"sectionTitle":"5. 第二条视觉路线：只看四块，预测其余位置","currentQuestion":"5. 第二条视觉路线：只看四块，预测其余位置","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-81970bdea2879d5aac095cb7","nextBlock":"b-3470c0558934ed6d0f0ddecb","prerequisites":[{"id":"b-af6d8c5d0e7ace4e3e985d63","url":"#b-af6d8c5d0e7ace4e3e985d63","role":"section-title"},{"id":"b-5fe96b5eaf428cb10e39951a","url":"#b-5fe96b5eaf428cb10e39951a","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-3470c0558934ed6d0f0ddecb","type":"p","scope":"block-fdd3ba8228064e708e554a6bf0bc3239","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-3470c0558934ed6d0f0ddecb","content":"对比目标强调变换后的关系；遮挡目标要求可见内容支持缺失内容预测。两种路线都有可能得到可复用表示，也都有选择代价：强变换可能删掉任务线索，重建可能把资源用在下游并不关心的纹理上。","sha256":"8b3005e9f4ad6c069da988920a4232f225408f8e65d3d980260c4a0e52798a93","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-3f06781e88514d50804f3ccb98dfb837","title":"5. 第二条视觉路线：只看四块，预测其余位置","number":10},"sectionTitle":"5. 第二条视觉路线：只看四块，预测其余位置","currentQuestion":"5. 第二条视觉路线：只看四块，预测其余位置","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-69252b9e51210b8ca1f38ffe","nextBlock":"b-3b4af1550132d2db06ab2b14","prerequisites":[{"id":"b-af6d8c5d0e7ace4e3e985d63","url":"#b-af6d8c5d0e7ace4e3e985d63","role":"section-title"},{"id":"b-5fe96b5eaf428cb10e39951a","url":"#b-5fe96b5eaf428cb10e39951a","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-3b4af1550132d2db06ab2b14","type":"pre","scope":"block-d2d14b3594c1422da696002478bcfa4b","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-3b4af1550132d2db06ab2b14","content":"```\n# 独立 CPU 练习：改变 visible 或 crop，观察位置与目标集合。\nvisible = {0,3,9,14}\ncrop = (0,0,4,4)  # 网格坐标 (左,上,右,下)，右/下边界不含；可改为 (0,0,2,4)\nassert visible <= set(range(16))\nleft,top,right,bottom = crop\nassert 0 <= left < right <= 4 and 0 <= top < bottom <= 4\nretained = {4*r+c for r in range(top,bottom) for c in range(left,right)}\nencoder_positions = sorted(visible & retained)\nmasked_positions = sorted(retained-visible)\nprint('编码器读入位置:',encoder_positions)\nprint('损失比较位置:',masked_positions)\nprint('解码器位置表:')\nfor r in range(4):\n    print(['OUT' if 4*r+c not in retained else (str(4*r+c) if 4*r+c in visible else 'MASK') for c in range(4)])\nif crop == (0,0,4,4):\n    assert len(encoder_positions)==4 and len(masked_positions)==12\nprint('这些是输入/目标位置；这里没有训练或执行重建模型。')\n```","sha256":"e4fbd3cc5c039b72d89b0a2031c48d06af898c459225192e70b941cc1bd85ba3","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-3f06781e88514d50804f3ccb98dfb837","title":"5. 第二条视觉路线：只看四块，预测其余位置","number":10},"sectionTitle":"5. 第二条视觉路线：只看四块，预测其余位置","currentQuestion":"5. 第二条视觉路线：只看四块，预测其余位置","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-3470c0558934ed6d0f0ddecb","nextBlock":null,"prerequisites":[{"id":"b-af6d8c5d0e7ace4e3e985d63","url":"#b-af6d8c5d0e7ace4e3e985d63","role":"section-title"},{"id":"b-5fe96b5eaf428cb10e39951a","url":"#b-5fe96b5eaf428cb10e39951a","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-012aceb30f70af02dfdd718a","type":"h3","scope":"block-2dcdc6fc68294f9082c5e7d1a82bab9a","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-012aceb30f70af02dfdd718a","content":"### 6. 什么变化应该忽略，哪些差别必须留下？","sha256":"12458973f50270a4867cf8b929b412a686266651e3695504ad9aeb06ef86c583","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","title":"6. 什么变化应该忽略，哪些差别必须留下？","number":11},"sectionTitle":"6. 什么变化应该忽略，哪些差别必须留下？","currentQuestion":"6. 什么变化应该忽略，哪些差别必须留下？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":null,"nextBlock":"b-f1a33f8825c486e24e0caa00","prerequisites":[{"id":"b-f1a33f8825c486e24e0caa00","url":"#b-f1a33f8825c486e24e0caa00","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-f1a33f8825c486e24e0caa00","type":"p","scope":"block-c234116ee736497a86061918857c2051","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-f1a33f8825c486e24e0caa00","content":"**原始红零件**","sha256":"37a93759c7da0b218a5d25b8d9f9654151428d692807fcc07f32de837ca45f6c","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","title":"6. 什么变化应该忽略，哪些差别必须留下？","number":11},"sectionTitle":"6. 什么变化应该忽略，哪些差别必须留下？","currentQuestion":"6. 什么变化应该忽略，哪些差别必须留下？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-012aceb30f70af02dfdd718a","nextBlock":"b-732ea94e6d6aea4cd578a52d","prerequisites":[{"id":"b-012aceb30f70af02dfdd718a","url":"#b-012aceb30f70af02dfdd718a","role":"section-title"}],"relatedBlocks":[]},{"id":"b-732ea94e6d6aea4cd578a52d","type":"p","scope":"block-c234116ee736497a86061918857c2051","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-732ea94e6d6aea4cd578a52d","content":"![原始红零件](/course/knowledge-assets/cf56fe148f0ef88d8f63bdc3.jpg)","sha256":"8c0d8fe3f3bd1c5b9c4d9d17580f053079b535e402fcff852d102dcd9007c575","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","title":"6. 什么变化应该忽略，哪些差别必须留下？","number":11},"sectionTitle":"6. 什么变化应该忽略，哪些差别必须留下？","currentQuestion":"6. 什么变化应该忽略，哪些差别必须留下？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-f1a33f8825c486e24e0caa00","nextBlock":"b-5d358366bb82a939a2918f5b","prerequisites":[{"id":"b-012aceb30f70af02dfdd718a","url":"#b-012aceb30f70af02dfdd718a","role":"section-title"},{"id":"b-f1a33f8825c486e24e0caa00","url":"#b-f1a33f8825c486e24e0caa00","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-5d358366bb82a939a2918f5b","type":"p","scope":"block-c234116ee736497a86061918857c2051","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-5d358366bb82a939a2918f5b","content":"**同一零件，减弱光强**","sha256":"bea6e0a37315cff83f2d5d1cacc6416cd8aae1f4a53e23a6150c722a5eac1308","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","title":"6. 什么变化应该忽略，哪些差别必须留下？","number":11},"sectionTitle":"6. 什么变化应该忽略，哪些差别必须留下？","currentQuestion":"6. 什么变化应该忽略，哪些差别必须留下？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-732ea94e6d6aea4cd578a52d","nextBlock":"b-3db1c83cbbd8ef4837317436","prerequisites":[{"id":"b-012aceb30f70af02dfdd718a","url":"#b-012aceb30f70af02dfdd718a","role":"section-title"},{"id":"b-f1a33f8825c486e24e0caa00","url":"#b-f1a33f8825c486e24e0caa00","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-3db1c83cbbd8ef4837317436","type":"p","scope":"block-c234116ee736497a86061918857c2051","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-3db1c83cbbd8ef4837317436","content":"![同一零件，减弱光强](/course/knowledge-assets/7902ad39fa0842cada6fc0ed.jpg)","sha256":"7e812a4497272d38634e578b8bd0e8f66f66ccee35529fd2ea5e3899e0b8b480","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","title":"6. 什么变化应该忽略，哪些差别必须留下？","number":11},"sectionTitle":"6. 什么变化应该忽略，哪些差别必须留下？","currentQuestion":"6. 什么变化应该忽略，哪些差别必须留下？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-5d358366bb82a939a2918f5b","nextBlock":"b-adfd9a3cd7c9b34c50893785","prerequisites":[{"id":"b-012aceb30f70af02dfdd718a","url":"#b-012aceb30f70af02dfdd718a","role":"section-title"},{"id":"b-f1a33f8825c486e24e0caa00","url":"#b-f1a33f8825c486e24e0caa00","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-adfd9a3cd7c9b34c50893785","type":"p","scope":"block-c234116ee736497a86061918857c2051","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-adfd9a3cd7c9b34c50893785","content":"**同一几何，受控红蓝变化**","sha256":"cc5aa9d0f22891080a75b6c0d8e433f164ff465926c8f5db44fdd1a0c2a05531","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","title":"6. 什么变化应该忽略，哪些差别必须留下？","number":11},"sectionTitle":"6. 什么变化应该忽略，哪些差别必须留下？","currentQuestion":"6. 什么变化应该忽略，哪些差别必须留下？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-3db1c83cbbd8ef4837317436","nextBlock":"b-a44c778c88ed3dcc339363ef","prerequisites":[{"id":"b-012aceb30f70af02dfdd718a","url":"#b-012aceb30f70af02dfdd718a","role":"section-title"},{"id":"b-f1a33f8825c486e24e0caa00","url":"#b-f1a33f8825c486e24e0caa00","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-a44c778c88ed3dcc339363ef","type":"p","scope":"block-c234116ee736497a86061918857c2051","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-a44c778c88ed3dcc339363ef","content":"![同一几何，受控红蓝变化](/course/knowledge-assets/039995e6177ea90fc385f918.jpg)","sha256":"8b479070fd03af260b30cf0476763acf524f55b39eaa6a87e7214cff669b3f8b","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","title":"6. 什么变化应该忽略，哪些差别必须留下？","number":11},"sectionTitle":"6. 什么变化应该忽略，哪些差别必须留下？","currentQuestion":"6. 什么变化应该忽略，哪些差别必须留下？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-adfd9a3cd7c9b34c50893785","nextBlock":"b-607e3d4965a16091362d15a3","prerequisites":[{"id":"b-012aceb30f70af02dfdd718a","url":"#b-012aceb30f70af02dfdd718a","role":"section-title"},{"id":"b-f1a33f8825c486e24e0caa00","url":"#b-f1a33f8825c486e24e0caa00","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-607e3d4965a16091362d15a3","type":"p","scope":"block-c234116ee736497a86061918857c2051","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-607e3d4965a16091362d15a3","content":"同型号红蓝零件的增强情境；受控光强和色相变换用于讨论任务答案是否保持。","sha256":"ae6ca5d7e71ae550cc2e2df9ab551122a48a6fcaba3ed1486ecabd8bbccdb35f","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","title":"6. 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学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","title":"6. 什么变化应该忽略，哪些差别必须留下？","number":11},"sectionTitle":"6. 什么变化应该忽略，哪些差别必须留下？","currentQuestion":"6. 什么变化应该忽略，哪些差别必须留下？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-87a75ebb48efa9da5f06c232","nextBlock":"b-7feadc5cb8b4ba5cdd3236f4","prerequisites":[{"id":"b-012aceb30f70af02dfdd718a","url":"#b-012aceb30f70af02dfdd718a","role":"section-title"},{"id":"b-f1a33f8825c486e24e0caa00","url":"#b-f1a33f8825c486e24e0caa00","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-7feadc5cb8b4ba5cdd3236f4","type":"li","scope":"block-c234116ee736497a86061918857c2051","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-7feadc5cb8b4ba5cdd3236f4","content":"- 结构是否允许保存颜色差异？一个多通道张量可以容纳它。","sha256":"942008bcf103adbedfec9a2361085931a4e6cf9aa06dc31d01b67b0381bebe9e","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","title":"6. 什么变化应该忽略，哪些差别必须留下？","number":11},"sectionTitle":"6. 什么变化应该忽略，哪些差别必须留下？","currentQuestion":"6. 什么变化应该忽略，哪些差别必须留下？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-827fe282b426e573f1806da6","nextBlock":"b-c1a4debb2b79031f433ba529","prerequisites":[{"id":"b-012aceb30f70af02dfdd718a","url":"#b-012aceb30f70af02dfdd718a","role":"section-title"},{"id":"b-f1a33f8825c486e24e0caa00","url":"#b-f1a33f8825c486e24e0caa00","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-c1a4debb2b79031f433ba529","type":"li","scope":"block-c234116ee736497a86061918857c2051","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-c1a4debb2b79031f433ba529","content":"- 训练实际是否保留颜色差异？要求强色相不变的目标可能使它被忽略。","sha256":"124c489caf1dfe4c6d09f247ba4c6c45459c9fd05c6f9beac00f992067ee4c8d","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","title":"6. 什么变化应该忽略，哪些差别必须留下？","number":11},"sectionTitle":"6. 什么变化应该忽略，哪些差别必须留下？","currentQuestion":"6. 什么变化应该忽略，哪些差别必须留下？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-7feadc5cb8b4ba5cdd3236f4","nextBlock":"b-57a46065cec8db752c4fbbb0","prerequisites":[{"id":"b-012aceb30f70af02dfdd718a","url":"#b-012aceb30f70af02dfdd718a","role":"section-title"},{"id":"b-f1a33f8825c486e24e0caa00","url":"#b-f1a33f8825c486e24e0caa00","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-57a46065cec8db752c4fbbb0","type":"li","scope":"block-c234116ee736497a86061918857c2051","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-57a46065cec8db752c4fbbb0","content":"- 读出器能否使用已保留的信息？信息存在，不保证一条线性边界就能取出来。","sha256":"57ae1ee84a659784825cfa14d037834fda286e5bc4f51fc82e9f91925abbfee7","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","title":"6. 什么变化应该忽略，哪些差别必须留下？","number":11},"sectionTitle":"6. 什么变化应该忽略，哪些差别必须留下？","currentQuestion":"6. 什么变化应该忽略，哪些差别必须留下？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-c1a4debb2b79031f433ba529","nextBlock":"b-c1cd3fad990a0cffc1543bca","prerequisites":[{"id":"b-012aceb30f70af02dfdd718a","url":"#b-012aceb30f70af02dfdd718a","role":"section-title"},{"id":"b-f1a33f8825c486e24e0caa00","url":"#b-f1a33f8825c486e24e0caa00","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-c1cd3fad990a0cffc1543bca","type":"p","scope":"block-c234116ee736497a86061918857c2051","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-c1cd3fad990a0cffc1543bca","content":"**先作判断：** 对这个任务选哪一种变换？然后说明用什么误例或读出比较来改变判断。答案不依赖“增强越强越好”，而依赖最终要保留的差别。","sha256":"6db5b262640b1505ffbad295002576f0b7edf1e49c256c3c6ae3305266754f2c","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-2dcdc6fc68294f9082c5e7d1a82bab9a","title":"6. 什么变化应该忽略，哪些差别必须留下？","number":11},"sectionTitle":"6. 什么变化应该忽略，哪些差别必须留下？","currentQuestion":"6. 什么变化应该忽略，哪些差别必须留下？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-57a46065cec8db752c4fbbb0","nextBlock":null,"prerequisites":[{"id":"b-012aceb30f70af02dfdd718a","url":"#b-012aceb30f70af02dfdd718a","role":"section-title"},{"id":"b-f1a33f8825c486e24e0caa00","url":"#b-f1a33f8825c486e24e0caa00","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-ee61763cbd9a561870cca7d5","type":"h3","scope":"block-610939aefa594e76b13487539aa1a7bc","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-ee61763cbd9a561870cca7d5","content":"### 四点 XOR：读不出来，不一定是没留下","sha256":"66ba08cf77d1cbbbeb8ed4fc4c3e37f64116f0ba139f3c60e32d3712a52bddce","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-610939aefa594e76b13487539aa1a7bc","title":"四点 XOR：读不出来，不一定是没留下","number":12},"sectionTitle":"四点 XOR：读不出来，不一定是没留下","currentQuestion":"四点 XOR：读不出来，不一定是没留下","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":null,"nextBlock":"b-526c45a1f1f02fcaf72df152","prerequisites":[{"id":"b-526c45a1f1f02fcaf72df152","url":"#b-526c45a1f1f02fcaf72df152","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-526c45a1f1f02fcaf72df152","type":"p","scope":"block-610939aefa594e76b13487539aa1a7bc","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-526c45a1f1f02fcaf72df152","content":"四个表示 h 为 `(−1,−1)、(−1,+1)、(+1,−1)、(+1,+1)`。同号的两点标签为 0，异号的两点为 1。每一点都不同，标签信息并未因碰撞而消失，但这两组对角点不能被一条直线完全分开。","sha256":"21dd7587943978b2ff3e3ee3dfefaab4cf0eb4ec55b5baea03ebcd5cd04add70","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-610939aefa594e76b13487539aa1a7bc","title":"四点 XOR：读不出来，不一定是没留下","number":12},"sectionTitle":"四点 XOR：读不出来，不一定是没留下","currentQuestion":"四点 XOR：读不出来，不一定是没留下","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-ee61763cbd9a561870cca7d5","nextBlock":"b-9695b60d7ada0c7f2bbc70d8","prerequisites":[{"id":"b-ee61763cbd9a561870cca7d5","url":"#b-ee61763cbd9a561870cca7d5","role":"section-title"}],"relatedBlocks":[]},{"id":"b-9695b60d7ada0c7f2bbc70d8","type":"p","scope":"block-610939aefa594e76b13487539aa1a7bc","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-9695b60d7ada0c7f2bbc70d8","content":"加一个确定性非线性特征 `z=h₁×h₂` 后，同号为 +1、异号为 −1，一维阈值就能分开。这只构造了“表示与读出一起决定可用性”的例子；它不主张真实 SimCLR 的投影头必然学成这个乘法。","sha256":"373ef2e423a4d5b83cca3f1738be7bc797a1c8961cd07b22f5545780eb1065ab","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-610939aefa594e76b13487539aa1a7bc","title":"四点 XOR：读不出来，不一定是没留下","number":12},"sectionTitle":"四点 XOR：读不出来，不一定是没留下","currentQuestion":"四点 XOR：读不出来，不一定是没留下","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-526c45a1f1f02fcaf72df152","nextBlock":"b-94f828281501e816e9b3f0f9","prerequisites":[{"id":"b-ee61763cbd9a561870cca7d5","url":"#b-ee61763cbd9a561870cca7d5","role":"section-title"},{"id":"b-526c45a1f1f02fcaf72df152","url":"#b-526c45a1f1f02fcaf72df152","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-94f828281501e816e9b3f0f9","type":"p","scope":"block-610939aefa594e76b13487539aa1a7bc","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-94f828281501e816e9b3f0f9","content":"静态结果：原四点各有身份；新特征为 `[+1,−1,−1,+1]`，用 `z<0` 读取标签得到 `[0,1,1,0]`。这也解释为什么需要同时报告冻结线性评价与允许非线性适配的评价。","sha256":"15ddd6aaf72513f88eb93ad217c64c61ae856156905d30d26aec16d8855c6f63","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-610939aefa594e76b13487539aa1a7bc","title":"四点 XOR：读不出来，不一定是没留下","number":12},"sectionTitle":"四点 XOR：读不出来，不一定是没留下","currentQuestion":"四点 XOR：读不出来，不一定是没留下","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-9695b60d7ada0c7f2bbc70d8","nextBlock":"b-74b0c45541848768f039e80d","prerequisites":[{"id":"b-ee61763cbd9a561870cca7d5","url":"#b-ee61763cbd9a561870cca7d5","role":"section-title"},{"id":"b-526c45a1f1f02fcaf72df152","url":"#b-526c45a1f1f02fcaf72df152","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-74b0c45541848768f039e80d","type":"pre","scope":"block-18ab1e7467c0443890a83ed274ee0499","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-74b0c45541848768f039e80d","content":"```\n# 独立 CPU XOR 检查；这里的变换是手工构造。\nh = [(-1,-1),(-1,1),(1,-1),(1,1)]\ny = [0,1,1,0]\nz = [a*b for a,b in h]\nprediction = [int(v<0) for v in z]\nassert prediction == y\nassert tuple((h[0][j]+h[3][j])/2 for j in (0,1)) == (0,0)\nassert tuple((h[1][j]+h[2][j])/2 for j in (0,1)) == (0,0)\nprint('h:',h,'手工非线性特征:',z,'阈值读出:',prediction)\nprint('两类凸包都包含原点；因此原空间不存在严格分开两类的直线。')\n```","sha256":"906139e8c11b9aafe6949cd19c9dfda4949ec16ce059625cbcde4ea933b61d5c","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-610939aefa594e76b13487539aa1a7bc","title":"四点 XOR：读不出来，不一定是没留下","number":12},"sectionTitle":"四点 XOR：读不出来，不一定是没留下","currentQuestion":"四点 XOR：读不出来，不一定是没留下","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-94f828281501e816e9b3f0f9","nextBlock":null,"prerequisites":[{"id":"b-ee61763cbd9a561870cca7d5","url":"#b-ee61763cbd9a561870cca7d5","role":"section-title"},{"id":"b-526c45a1f1f02fcaf72df152","url":"#b-526c45a1f1f02fcaf72df152","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-625684de1a33a26de256251f","type":"h3","scope":"block-cd6137d9487f49fb9c6601c0166f7658","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-625684de1a33a26de256251f","content":"### 7. 表示确实可以复用：看一个下游例子","sha256":"99fc1b638b1f208c22e206c213955fff1c1a0ad0f8649fba049d94e3bc2a4064","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-cd6137d9487f49fb9c6601c0166f7658","title":"7. 表示确实可以复用：看一个下游例子","number":13},"sectionTitle":"7. 表示确实可以复用：看一个下游例子","currentQuestion":"7. 表示确实可以复用：看一个下游例子","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":null,"nextBlock":"b-dfc066987571e541698fdad5","prerequisites":[{"id":"b-dfc066987571e541698fdad5","url":"#b-dfc066987571e541698fdad5","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-dfc066987571e541698fdad5","type":"p","scope":"block-3512fe9109bd4f3aa18a76dfbaab7dcb","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-dfc066987571e541698fdad5","content":"MoCo 原论文 Table 2(b) 将在 ImageNet-1M 上预训练的 ResNet-50-C4 接入 Faster R-CNN，再用 PASCAL VOC trainval07+12 的检测标注**全层微调 24k 次**。在 test2007 上取 5 次实验平均，COCO 式 box AP 为：有监督预训练 **53.5**，MoCo 预训练 **55.9**。[原文 Table 2(b) 与 §4.2.1](https://arxiv.org/html/1911.05722v3#S4.SS2.SSS1)","sha256":"c0eff0e6323efc9495c850b5ad348dfc067311ffe29a4ca40573bd3fb4070ab9","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-cd6137d9487f49fb9c6601c0166f7658","title":"7. 表示确实可以复用：看一个下游例子","number":13},"sectionTitle":"7. 表示确实可以复用：看一个下游例子","currentQuestion":"7. 表示确实可以复用：看一个下游例子","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-625684de1a33a26de256251f","nextBlock":"b-9fa6156eb84a639bc740eb22","prerequisites":[{"id":"b-625684de1a33a26de256251f","url":"#b-625684de1a33a26de256251f","role":"section-title"}],"relatedBlocks":[]},{"id":"b-9fa6156eb84a639bc740eb22","type":"p","scope":"block-3512fe9109bd4f3aa18a76dfbaab7dcb","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-9fa6156eb84a639bc740eb22","content":"这里的积极证据是：通过视图对比学习的编码器可以适配对象检测，在这套明确协议下提供了有用起点。两组下游微调方案相匹配；检测头和主干都接受目标任务监督，这不是“冻结后自动会检测”，也不表示预训练与下游合计预算被完全配平。","sha256":"c9232e22eac43ab210e995f7f3b1a67aa36c4ed1744430c88d79ac5ad687e4fd","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-cd6137d9487f49fb9c6601c0166f7658","title":"7. 表示确实可以复用：看一个下游例子","number":13},"sectionTitle":"7. 表示确实可以复用：看一个下游例子","currentQuestion":"7. 表示确实可以复用：看一个下游例子","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-dfc066987571e541698fdad5","nextBlock":"b-5141c4c4ace97793d4fe6a8a","prerequisites":[{"id":"b-625684de1a33a26de256251f","url":"#b-625684de1a33a26de256251f","role":"section-title"},{"id":"b-dfc066987571e541698fdad5","url":"#b-dfc066987571e541698fdad5","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-5141c4c4ace97793d4fe6a8a","type":"p","scope":"block-3512fe9109bd4f3aa18a76dfbaab7dcb","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-5141c4c4ace97793d4fe6a8a","content":"这也自然引出下一部分：用哪一种目标预训练，与最后要输出类别、框还是掩码，是可以分别设计的两个问题。","sha256":"9d3ef1a0e6164f4ee25a48e8dc3e5a72e17fa91f32241d6bcbea430133e14053","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-cd6137d9487f49fb9c6601c0166f7658","title":"7. 表示确实可以复用：看一个下游例子","number":13},"sectionTitle":"7. 表示确实可以复用：看一个下游例子","currentQuestion":"7. 表示确实可以复用：看一个下游例子","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-9fa6156eb84a639bc740eb22","nextBlock":null,"prerequisites":[{"id":"b-625684de1a33a26de256251f","url":"#b-625684de1a33a26de256251f","role":"section-title"},{"id":"b-dfc066987571e541698fdad5","url":"#b-dfc066987571e541698fdad5","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-84b43c9362709726f5df7bf3","type":"h3","scope":"block-df034e9618f14dfe8489b5f4e5ec0247","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-84b43c9362709726f5df7bf3","content":"### 选择一个使用问题，做一次完整比较","sha256":"8b8e184517284d0eeb1935147e24b05de78cb0d4f75afae0cd3b9e10dad32c86","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 学习信号、表示与迁移"},"page":{"id":"reading-block-df034e9618f14dfe8489b5f4e5ec0247","title":"选择一个使用问题，做一次完整比较","number":14},"sectionTitle":"选择一个使用问题，做一次完整比较","currentQuestion":"选择一个使用问题，做一次完整比较","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":null,"nextBlock":"b-b0568d422823d554fcad65f3","prerequisites":[{"id":"b-054f99b5fbd214a44a72798f","url":"#b-054f99b5fbd214a44a72798f","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-b0568d422823d554fcad65f3","type":"table","scope":"block-df034e9618f14dfe8489b5f4e5ec0247","url":"https://codingai-lec03.pages.dev/course/cls01-signals.html#b-b0568d422823d554fcad65f3","content":"| 你的问题 | 首选实验 | 应保持的条件 |\n| --- | --- | --- |\n| 现成表示里能读出什么？ | [LAB 01 · 固定表示：标签预算与读出](https://deepnote.com/workspace/ise3309jingao-5ba66b0a-4283-4f5a-ae06-3f68d3201e99/project/38755e4e-23f6-4f5f-8c68-8a2e4114b1c1/notebook/4dd8605ed9904820919ea9e13d9e7d7c?utm_source=openai&utm_medium=mcp&utm_campaign=openaimcp&utm_content=4dd8605ed9904820919ea9e13d9e7d7c&utm_term=get_notebook) | 编码器、样本划分、预处理不变；改变标签预算或读出 |\n| 允许改参数后是否值得？ | [LAB 02 · 参数迁移：冻结、局部与全量微调](https://deepnote.com/workspace/ise3309jingao-5ba66b0a-4283-4f5a-ae06-3f68d3201e99/project/38755e4e-23f6-4f5f-8c68-8a2e4114b1c1/notebook/4bd450d54870432db91c80a4df563b8e?utm_source=openai&utm_medium=mcp&utm_campaign=openaimcp&utm_content=4bd450d54870432db91c80a4df563b8e&utm_term=get_notebook) | 同一源checkpoint、新任务与划分；比较冻结、局部、全量和scratch |","sha256":"0d280f3a52fadd3a3c70f3c1804b2ff24ab41857b05f79f6f4b34c3cd8c20c36","chapter":{"id":"course","title":"CLS 01 · 学习信号、表示与迁移"},"unit":{"id":"cls01-signals","title":"CLS 01 · 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