{"version":2,"relationshipURLBase":"https://codingai-lec03.pages.dev/course/blocks/mae-position-dialogue.html","relationshipResolution":"Resolve relative relationship URLs against relationshipURLBase; complete records and absolute URLs are in blocks.","title":"模拟问答：不知道的地方为何还有位置？","url":"https://codingai-lec03.pages.dev/course/blocks/mae-position-dialogue.html","markdown":"https://codingai-lec03.pages.dev/course/blocks/mae-position-dialogue.md","pages":[{"id":"reading-opening","title":"模拟问答：不知道的地方为何还有位置？","unit":"限制可见信息，怎样构成可验证的重建任务？","unitId":"i-masked-prediction","chapter":"I","number":1}],"aliases":[{"oldId":"b-a7c9db0300c256a9331bc5fb","targetId":"b-a7c9db0300c256a9331bc5fb","page":"reading-opening","operation":"move","beforeSHA256":"e1ac8b88982c4aa10894a37947b658dd0c149cd46cbb7012792caf164cbbb356","afterSHA256":"e1ac8b88982c4aa10894a37947b658dd0c149cd46cbb7012792caf164cbbb356","reason":"Same source body in authored semantic page"},{"oldId":"b-63870f3d2bba622d676f3648","targetId":"b-63870f3d2bba622d676f3648","page":"reading-opening","operation":"move","beforeSHA256":"aa49ae401ddbd7e2d722e8c4b5c79e44357422e339b0bfce9729a2c00bb5f2ae","afterSHA256":"aa49ae401ddbd7e2d722e8c4b5c79e44357422e339b0bfce9729a2c00bb5f2ae","reason":"Same source body in authored semantic page"},{"oldId":"b-0b904571e093ecee6da6c77c","targetId":"b-0b904571e093ecee6da6c77c","page":"reading-opening","operation":"move","beforeSHA256":"3372b11342ebcdd9d3768ed439f5cd51b1b41364077b222a213f25f95759dd5d","afterSHA256":"3372b11342ebcdd9d3768ed439f5cd51b1b41364077b222a213f25f95759dd5d","reason":"Same source body in authored semantic page"},{"oldId":"b-e3147ceabaa3a788abdab8ad","targetId":"b-e3147ceabaa3a788abdab8ad","page":"reading-opening","operation":"move","beforeSHA256":"5e950da9f05130cff035f23a09f66f44af012c2effb3a3947f44fe3a7cbbff59","afterSHA256":"5e950da9f05130cff035f23a09f66f44af012c2effb3a3947f44fe3a7cbbff59","reason":"Same source body in authored semantic page"},{"oldId":"b-9b158fc308f44c3c5bb6f08b","targetId":"b-9b158fc308f44c3c5bb6f08b","page":"reading-opening","operation":"move","beforeSHA256":"3fab7ed78949f741fa0080b92c42389e80eccd1039715f3020a776ebbc85573c","afterSHA256":"3fab7ed78949f741fa0080b92c42389e80eccd1039715f3020a776ebbc85573c","reason":"Same source body in authored semantic page"},{"oldId":"b-ad9da608b48e6558a82d8582","targetId":"b-ad9da608b48e6558a82d8582","page":"reading-opening","operation":"move","beforeSHA256":"252768d9c63fdc8020d8bb7e99d5a42c12ec0207ab0f50a0d7084bb50ee2e05d","afterSHA256":"252768d9c63fdc8020d8bb7e99d5a42c12ec0207ab0f50a0d7084bb50ee2e05d","reason":"Same source body in authored semantic page"},{"oldId":"b-f89a407861f26a8e1c329d83","targetId":"b-f89a407861f26a8e1c329d83","page":"reading-opening","operation":"move","beforeSHA256":"6fac9a831ff6e535201056592a8ac6151184286bd859ef56c79e042941628185","afterSHA256":"6fac9a831ff6e535201056592a8ac6151184286bd859ef56c79e042941628185","reason":"Same source body in authored semantic page"},{"oldId":"b-77af40f3a857277c2b8be5b6","targetId":"b-77af40f3a857277c2b8be5b6","page":"reading-opening","operation":"move","beforeSHA256":"f8cac5387ae06a655b53352831667d993d60818d569ab93b949960a45afd70fa","afterSHA256":"f8cac5387ae06a655b53352831667d993d60818d569ab93b949960a45afd70fa","reason":"Same source body in authored semantic page"},{"oldId":"b-9b41961a9b8ea3c1151c15b5","targetId":"b-9b41961a9b8ea3c1151c15b5","page":"reading-opening","operation":"move","beforeSHA256":"5fba9687f1063a09fe6952078c4603540def9cd0c43193f93cf00ebbaf0c6a28","afterSHA256":"5fba9687f1063a09fe6952078c4603540def9cd0c43193f93cf00ebbaf0c6a28","reason":"Same source body in authored semantic page"},{"oldId":"b-3f6c3013a1cfe65c491e275c","targetId":"b-3f6c3013a1cfe65c491e275c","page":"reading-opening","operation":"rewrite","beforeSHA256":"815a03eace1a2a656426ebed769d5ffd9a99eee29cdf195e064c7236fc3fccea","afterSHA256":"8150ba8e8adaba606bb924e7dd28a137214beb0407ac71fe4e3a1dc9d16f4de7","reason":"Same source identity with figure semantics or reading context enriched"},{"oldId":"b-0989818408df6f2259369b19","targetId":"b-0989818408df6f2259369b19","page":"reading-opening","operation":"move","beforeSHA256":"2b9ccef7e1220e2250cceff1abd8bdd736b42f8da5a223f26b029f44b962e807","afterSHA256":"2b9ccef7e1220e2250cceff1abd8bdd736b42f8da5a223f26b029f44b962e807","reason":"Same source body in authored semantic page"}],"blocks":[{"id":"b-a7c9db0300c256a9331bc5fb","type":"h1","scope":"mae-position-dialogue","url":"https://codingai-lec03.pages.dev/course/blocks/mae-position-dialogue.html#b-a7c9db0300c256a9331bc5fb","content":"# 模拟问答：不知道的地方为何还有位置？","sha256":"e1ac8b88982c4aa10894a37947b658dd0c149cd46cbb7012792caf164cbbb356","chapter":{"id":"I","title":"学习信号与表示"},"unit":{"id":"i-masked-prediction","title":"限制可见信息，怎样构成可验证的重建任务？"},"page":{"id":"reading-opening","title":"模拟问答：不知道的地方为何还有位置？","number":1},"sectionTitle":"模拟问答：不知道的地方为何还有位置？","currentQuestion":"模拟问答：不知道的地方为何还有位置？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":null,"nextBlock":"b-63870f3d2bba622d676f3648","prerequisites":[{"id":"b-63870f3d2bba622d676f3648","url":"#b-63870f3d2bba622d676f3648","role":"problem-context"}],"relatedBlocks":[{"id":"b-3f6c3013a1cfe65c491e275c","url":"#b-3f6c3013a1cfe65c491e275c","relation":"figure-and-explanation"}]},{"id":"b-63870f3d2bba622d676f3648","type":"p","scope":"mae-position-dialogue","url":"https://codingai-lec03.pages.dev/course/blocks/mae-position-dialogue.html#b-63870f3d2bba622d676f3648","content":"解码阶段恢复位置，再预测内容；目标从原图来，误差只在隐藏集合比较。","sha256":"aa49ae401ddbd7e2d722e8c4b5c79e44357422e339b0bfce9729a2c00bb5f2ae","chapter":{"id":"I","title":"学习信号与表示"},"unit":{"id":"i-masked-prediction","title":"限制可见信息，怎样构成可验证的重建任务？"},"page":{"id":"reading-opening","title":"模拟问答：不知道的地方为何还有位置？","number":1},"sectionTitle":"模拟问答：不知道的地方为何还有位置？","currentQuestion":"模拟问答：不知道的地方为何还有位置？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-a7c9db0300c256a9331bc5fb","nextBlock":"b-0b904571e093ecee6da6c77c","prerequisites":[{"id":"b-a7c9db0300c256a9331bc5fb","url":"#b-a7c9db0300c256a9331bc5fb","role":"section-title"}],"relatedBlocks":[{"id":"b-3f6c3013a1cfe65c491e275c","url":"#b-3f6c3013a1cfe65c491e275c","relation":"figure-and-explanation"}]},{"id":"b-0b904571e093ecee6da6c77c","type":"p","scope":"mae-position-dialogue","url":"https://codingai-lec03.pages.dev/course/blocks/mae-position-dialogue.html#b-0b904571e093ecee6da6c77c","content":"以下为备课用模拟对话，不是实际课堂记录。","sha256":"3372b11342ebcdd9d3768ed439f5cd51b1b41364077b222a213f25f95759dd5d","chapter":{"id":"I","title":"学习信号与表示"},"unit":{"id":"i-masked-prediction","title":"限制可见信息，怎样构成可验证的重建任务？"},"page":{"id":"reading-opening","title":"模拟问答：不知道的地方为何还有位置？","number":1},"sectionTitle":"模拟问答：不知道的地方为何还有位置？","currentQuestion":"模拟问答：不知道的地方为何还有位置？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-63870f3d2bba622d676f3648","nextBlock":"b-e3147ceabaa3a788abdab8ad","prerequisites":[{"id":"b-a7c9db0300c256a9331bc5fb","url":"#b-a7c9db0300c256a9331bc5fb","role":"section-title"},{"id":"b-63870f3d2bba622d676f3648","url":"#b-63870f3d2bba622d676f3648","role":"problem-context"}],"relatedBlocks":[{"id":"b-3f6c3013a1cfe65c491e275c","url":"#b-3f6c3013a1cfe65c491e275c","relation":"figure-and-explanation"}]},{"id":"b-e3147ceabaa3a788abdab8ad","type":"p","scope":"mae-position-dialogue","url":"https://codingai-lec03.pages.dev/course/blocks/mae-position-dialogue.html#b-e3147ceabaa3a788abdab8ad","content":"**学生：**“遮住的地方没有像素，为什么解码器还有16项？”","sha256":"5e950da9f05130cff035f23a09f66f44af012c2effb3a3947f44fe3a7cbbff59","chapter":{"id":"I","title":"学习信号与表示"},"unit":{"id":"i-masked-prediction","title":"限制可见信息，怎样构成可验证的重建任务？"},"page":{"id":"reading-opening","title":"模拟问答：不知道的地方为何还有位置？","number":1},"sectionTitle":"模拟问答：不知道的地方为何还有位置？","currentQuestion":"模拟问答：不知道的地方为何还有位置？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-0b904571e093ecee6da6c77c","nextBlock":"b-9b158fc308f44c3c5bb6f08b","prerequisites":[{"id":"b-a7c9db0300c256a9331bc5fb","url":"#b-a7c9db0300c256a9331bc5fb","role":"section-title"},{"id":"b-63870f3d2bba622d676f3648","url":"#b-63870f3d2bba622d676f3648","role":"problem-context"}],"relatedBlocks":[{"id":"b-3f6c3013a1cfe65c491e275c","url":"#b-3f6c3013a1cfe65c491e275c","relation":"figure-and-explanation"}]},{"id":"b-9b158fc308f44c3c5bb6f08b","type":"p","scope":"mae-position-dialogue","url":"https://codingai-lec03.pages.dev/course/blocks/mae-position-dialogue.html#b-9b158fc308f44c3c5bb6f08b","content":"**教师：**“我们不知道内容，但知道问题要问哪个位置。可见位置放编码表示，隐藏位置放共同的mask占位，再给每项自己的位置线索。占位不是答案，位置告诉模型答案该落在哪儿。”","sha256":"3fab7ed78949f741fa0080b92c42389e80eccd1039715f3020a776ebbc85573c","chapter":{"id":"I","title":"学习信号与表示"},"unit":{"id":"i-masked-prediction","title":"限制可见信息，怎样构成可验证的重建任务？"},"page":{"id":"reading-opening","title":"模拟问答：不知道的地方为何还有位置？","number":1},"sectionTitle":"模拟问答：不知道的地方为何还有位置？","currentQuestion":"模拟问答：不知道的地方为何还有位置？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-e3147ceabaa3a788abdab8ad","nextBlock":"b-ad9da608b48e6558a82d8582","prerequisites":[{"id":"b-a7c9db0300c256a9331bc5fb","url":"#b-a7c9db0300c256a9331bc5fb","role":"section-title"},{"id":"b-63870f3d2bba622d676f3648","url":"#b-63870f3d2bba622d676f3648","role":"problem-context"}],"relatedBlocks":[{"id":"b-3f6c3013a1cfe65c491e275c","url":"#b-3f6c3013a1cfe65c491e275c","relation":"figure-and-explanation"}]},{"id":"b-ad9da608b48e6558a82d8582","type":"p","scope":"mae-position-dialogue","url":"https://codingai-lec03.pages.dev/course/blocks/mae-position-dialogue.html#b-ad9da608b48e6558a82d8582","content":"**学生：**“既然原图有答案，为什么不直接把它送进去？”","sha256":"252768d9c63fdc8020d8bb7e99d5a42c12ec0207ab0f50a0d7084bb50ee2e05d","chapter":{"id":"I","title":"学习信号与表示"},"unit":{"id":"i-masked-prediction","title":"限制可见信息，怎样构成可验证的重建任务？"},"page":{"id":"reading-opening","title":"模拟问答：不知道的地方为何还有位置？","number":1},"sectionTitle":"模拟问答：不知道的地方为何还有位置？","currentQuestion":"模拟问答：不知道的地方为何还有位置？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-9b158fc308f44c3c5bb6f08b","nextBlock":"b-f89a407861f26a8e1c329d83","prerequisites":[{"id":"b-a7c9db0300c256a9331bc5fb","url":"#b-a7c9db0300c256a9331bc5fb","role":"section-title"},{"id":"b-63870f3d2bba622d676f3648","url":"#b-63870f3d2bba622d676f3648","role":"problem-context"}],"relatedBlocks":[{"id":"b-3f6c3013a1cfe65c491e275c","url":"#b-3f6c3013a1cfe65c491e275c","relation":"figure-and-explanation"}]},{"id":"b-f89a407861f26a8e1c329d83","type":"p","scope":"mae-position-dialogue","url":"https://codingai-lec03.pages.dev/course/blocks/mae-position-dialogue.html#b-f89a407861f26a8e1c329d83","content":"**教师：**“原图由损失端保存。若把隐藏像素作为输入，模型就可能复制，遮挡任务被取消了。看图时把编码器入口和损失比较端分开。”","sha256":"6fac9a831ff6e535201056592a8ac6151184286bd859ef56c79e042941628185","chapter":{"id":"I","title":"学习信号与表示"},"unit":{"id":"i-masked-prediction","title":"限制可见信息，怎样构成可验证的重建任务？"},"page":{"id":"reading-opening","title":"模拟问答：不知道的地方为何还有位置？","number":1},"sectionTitle":"模拟问答：不知道的地方为何还有位置？","currentQuestion":"模拟问答：不知道的地方为何还有位置？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-ad9da608b48e6558a82d8582","nextBlock":"b-77af40f3a857277c2b8be5b6","prerequisites":[{"id":"b-a7c9db0300c256a9331bc5fb","url":"#b-a7c9db0300c256a9331bc5fb","role":"section-title"},{"id":"b-63870f3d2bba622d676f3648","url":"#b-63870f3d2bba622d676f3648","role":"problem-context"}],"relatedBlocks":[{"id":"b-3f6c3013a1cfe65c491e275c","url":"#b-3f6c3013a1cfe65c491e275c","relation":"figure-and-explanation"}]},{"id":"b-77af40f3a857277c2b8be5b6","type":"p","scope":"mae-position-dialogue","url":"https://codingai-lec03.pages.dev/course/blocks/mae-position-dialogue.html#b-77af40f3a857277c2b8be5b6","content":"**学生：**“补得像原图，就算学会分类了吗？”","sha256":"f8cac5387ae06a655b53352831667d993d60818d569ab93b949960a45afd70fa","chapter":{"id":"I","title":"学习信号与表示"},"unit":{"id":"i-masked-prediction","title":"限制可见信息，怎样构成可验证的重建任务？"},"page":{"id":"reading-opening","title":"模拟问答：不知道的地方为何还有位置？","number":1},"sectionTitle":"模拟问答：不知道的地方为何还有位置？","currentQuestion":"模拟问答：不知道的地方为何还有位置？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-f89a407861f26a8e1c329d83","nextBlock":"b-9b41961a9b8ea3c1151c15b5","prerequisites":[{"id":"b-a7c9db0300c256a9331bc5fb","url":"#b-a7c9db0300c256a9331bc5fb","role":"section-title"},{"id":"b-63870f3d2bba622d676f3648","url":"#b-63870f3d2bba622d676f3648","role":"problem-context"}],"relatedBlocks":[{"id":"b-3f6c3013a1cfe65c491e275c","url":"#b-3f6c3013a1cfe65c491e275c","relation":"figure-and-explanation"}]},{"id":"b-9b41961a9b8ea3c1151c15b5","type":"p","scope":"mae-position-dialogue","url":"https://codingai-lec03.pages.dev/course/blocks/mae-position-dialogue.html#b-9b41961a9b8ea3c1151c15b5","content":"**教师：**“那说明重建这件事做得更好。下一页再冻住编码器，另用标签做读出；只有测到那份结果，才能说明表示对分类有用。”","sha256":"5fba9687f1063a09fe6952078c4603540def9cd0c43193f93cf00ebbaf0c6a28","chapter":{"id":"I","title":"学习信号与表示"},"unit":{"id":"i-masked-prediction","title":"限制可见信息，怎样构成可验证的重建任务？"},"page":{"id":"reading-opening","title":"模拟问答：不知道的地方为何还有位置？","number":1},"sectionTitle":"模拟问答：不知道的地方为何还有位置？","currentQuestion":"模拟问答：不知道的地方为何还有位置？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-77af40f3a857277c2b8be5b6","nextBlock":"b-3f6c3013a1cfe65c491e275c","prerequisites":[{"id":"b-a7c9db0300c256a9331bc5fb","url":"#b-a7c9db0300c256a9331bc5fb","role":"section-title"},{"id":"b-63870f3d2bba622d676f3648","url":"#b-63870f3d2bba622d676f3648","role":"problem-context"}],"relatedBlocks":[{"id":"b-3f6c3013a1cfe65c491e275c","url":"#b-3f6c3013a1cfe65c491e275c","relation":"figure-and-explanation"}]},{"id":"b-3f6c3013a1cfe65c491e275c","type":"figure","scope":"mae-position-dialogue","url":"https://codingai-lec03.pages.dev/course/blocks/mae-position-dialogue.html#b-3f6c3013a1cfe65c491e275c","content":"图内标签与数值：P21 学习表示机制图，状态 2；解码端：所有位置加入 pᵢ；隐藏位置共用一个 mask 向量 M；h0+p0；M+p1；M+p2；h3+p3；M+p4；M+p5；M+p6；M+p7；M+p8；h9+p9；M+p10；M+p11；M+p12；M+p13；h14+p14；M+p15；4 个 h + 12 个 M；轻量解码器；ŷ0；ŷ1；ŷ2；ŷ3；ŷ4；ŷ5；ŷ6；ŷ7；ŷ8；ŷ9；ŷ10；ŷ11；ŷ12；ŷ13；ŷ14；ŷ15；各位置的像素预测（符号示意）；原图目标 x；L = (1/12) Σ隐藏块 MSE(ŷᵢ, xᵢ)；橙框：12 个计入 loss 的位置；预训练后留下编码器；重建用解码器不必进入下游系统。\n\n未知的是像素内容，已知的是需要预测的原图位置。 查看对应图解状态\n\n- 解码端：所有位置加入 pᵢ；隐藏位置共用一个 mask 向量 M\n- h0+p0\n- M+p1\n- M+p2\n- h3+p3\n- M+p4\n- M+p5\n- M+p6\n- M+p7\n- M+p8\n- h9+p9\n- M+p10\n- M+p11\n- M+p12\n- M+p13\n- h14+p14\n- M+p15\n- 4 个 h + 12 个 M\n- 轻量解码器\n- ŷ0\n- ŷ1\n- ŷ2\n- ŷ3\n- ŷ4\n- ŷ5\n- ŷ6\n- ŷ7\n- ŷ8\n- ŷ9\n- ŷ10\n- ŷ11\n- ŷ12\n- ŷ13\n- ŷ14\n- ŷ15\n- 各位置的像素预测（符号示意）\n- 原图目标 x\n- L = (1/12) Σ隐藏块 MSE(ŷᵢ, xᵢ)\n- 橙框：12 个计入 loss 的位置\n- 预训练后留下编码器；重建用解码器不必进入下游系统。未知的是像素内容，已知的是需要预测的原图位置。 [查看对应图解状态](/#/l3-r2-p21/1)[查看完整图解](/#/l3-r2-p21/1)","sha256":"8150ba8e8adaba606bb924e7dd28a137214beb0407ac71fe4e3a1dc9d16f4de7","chapter":{"id":"I","title":"学习信号与表示"},"unit":{"id":"i-masked-prediction","title":"限制可见信息，怎样构成可验证的重建任务？"},"page":{"id":"reading-opening","title":"模拟问答：不知道的地方为何还有位置？","number":1},"sectionTitle":"模拟问答：不知道的地方为何还有位置？","currentQuestion":"模拟问答：不知道的地方为何还有位置？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"figure":{"caption":"未知的是像素内容，已知的是需要预测的原图位置。 查看对应图解状态","labels":["解码端：所有位置加入 pᵢ；隐藏位置共用一个 mask 向量 M","h0+p0","M+p1","M+p2","h3+p3","M+p4","M+p5","M+p6","M+p7","M+p8","h9+p9","M+p10","M+p11","M+p12","M+p13","h14+p14","M+p15","4 个 h + 12 个 M","轻量解码器","ŷ0","ŷ1","ŷ2","ŷ3","ŷ4","ŷ5","ŷ6","ŷ7","ŷ8","ŷ9","ŷ10","ŷ11","ŷ12","ŷ13","ŷ14","ŷ15","各位置的像素预测（符号示意）","原图目标 x","L = (1/12) Σ隐藏块 MSE(ŷᵢ, xᵢ)","橙框：12 个计入 loss 的位置","预训练后留下编码器；重建用解码器不必进入下游系统。"],"description":"未知的是像素内容，已知的是需要预测的原图位置。 查看对应图解状态解码端：所有位置加入 pᵢ；隐藏位置共用一个 mask 向量 Mh0+p0M+p1M+p2h3+p3M+p4M+p5M+p6M+p7M+p8h9+p9M+p10M+p11M+p12M+p13h14+p14M+p154 个 h + 12 个 M轻量解码器ŷ0ŷ1ŷ2ŷ3ŷ4ŷ5ŷ6ŷ7ŷ8ŷ9ŷ10ŷ11ŷ12ŷ13ŷ14ŷ15各位置的像素预测（符号示意）原图目标 xL = (1/12) Σ隐藏块 MSE(ŷᵢ, xᵢ)橙框：12 个计入 loss 的位置预训练后留下编码器；重建用解码器不必进入下游系统。","evidenceIdentity":"未知的是像素内容，已知的是需要预测的原图位置。 查看对应图解状态","images":[{"src":"/assets/display/584c419ba431799ff41df983.webp","alt":""}]},"previousBlock":"b-9b41961a9b8ea3c1151c15b5","nextBlock":"b-0989818408df6f2259369b19","prerequisites":[{"id":"b-a7c9db0300c256a9331bc5fb","url":"#b-a7c9db0300c256a9331bc5fb","role":"section-title"},{"id":"b-63870f3d2bba622d676f3648","url":"#b-63870f3d2bba622d676f3648","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-0989818408df6f2259369b19","type":"h2","scope":"mae-position-dialogue","url":"https://codingai-lec03.pages.dev/course/blocks/mae-position-dialogue.html#b-0989818408df6f2259369b19","content":"## 继续阅读与实验","sha256":"2b9ccef7e1220e2250cceff1abd8bdd736b42f8da5a223f26b029f44b962e807","chapter":{"id":"I","title":"学习信号与表示"},"unit":{"id":"i-masked-prediction","title":"限制可见信息，怎样构成可验证的重建任务？"},"page":{"id":"reading-opening","title":"模拟问答：不知道的地方为何还有位置？","number":1},"sectionTitle":"模拟问答：不知道的地方为何还有位置？","currentQuestion":"模拟问答：不知道的地方为何还有位置？","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-3f6c3013a1cfe65c491e275c","nextBlock":null,"prerequisites":[{"id":"b-a7c9db0300c256a9331bc5fb","url":"#b-a7c9db0300c256a9331bc5fb","role":"section-title"},{"id":"b-63870f3d2bba622d676f3648","url":"#b-63870f3d2bba622d676f3648","role":"problem-context"}],"relatedBlocks":[{"id":"b-3f6c3013a1cfe65c491e275c","url":"#b-3f6c3013a1cfe65c491e275c","relation":"figure-and-explanation"}]}]}