{"version":2,"relationshipURLBase":"https://codingai-lec03.pages.dev/course/notebook-blocks/44a741e9a3334aa4b16f140a98179497.html","relationshipResolution":"Resolve relative relationship URLs against relationshipURLBase; complete records and absolute URLs are in blocks.","title":"索引热身仍然有用，但不能叫学到了语义","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/44a741e9a3334aa4b16f140a98179497.html","markdown":"https://codingai-lec03.pages.dev/course/notebook-blocks/44a741e9a3334aa4b16f140a98179497.md","pages":[{"id":"reading-opening","title":"索引热身仍然有用，但不能叫学到了语义","unit":"索引热身仍然有用，但不能叫学到了语义","unitId":"notebook-blocks/44a741e9a3334aa4b16f140a98179497","chapter":"course","number":1}],"aliases":[{"oldId":"b-9f8c14f769da70319f9a978f","targetId":"b-9f8c14f769da70319f9a978f","page":"reading-opening","operation":"move","beforeSHA256":"4730e90285e279b2564c179018b9df76aafd9db5dd2729f0f687ac380af591ed","afterSHA256":"4730e90285e279b2564c179018b9df76aafd9db5dd2729f0f687ac380af591ed","reason":"Same source body in authored semantic page"},{"oldId":"b-f25a22ad755e4d97876c38ba","targetId":"b-f25a22ad755e4d97876c38ba","page":"reading-opening","operation":"move","beforeSHA256":"775f5c1da6e138e2f96d7434e094257b8f9c096e37cc6095bd9ad24db3048ed7","afterSHA256":"775f5c1da6e138e2f96d7434e094257b8f9c096e37cc6095bd9ad24db3048ed7","reason":"Same source body in authored semantic page"},{"oldId":"b-c43876f69b790a6f41c0c96b","targetId":"b-c43876f69b790a6f41c0c96b","page":"reading-opening","operation":"move","beforeSHA256":"e91f24e4e4ca40e2099a0d81d30db6568f4bf2074b499eeee6e3959617bd97ac","afterSHA256":"e91f24e4e4ca40e2099a0d81d30db6568f4bf2074b499eeee6e3959617bd97ac","reason":"Same source body in authored semantic page"},{"oldId":"b-0e456ea9460ec5aa956f736c","targetId":"b-0e456ea9460ec5aa956f736c","page":"reading-opening","operation":"move","beforeSHA256":"0f845ef31b98ed8c96f689fea3088b0a7482be32b2d5510c83f9fcbb05da4c9d","afterSHA256":"0f845ef31b98ed8c96f689fea3088b0a7482be32b2d5510c83f9fcbb05da4c9d","reason":"Same source body in authored semantic page"},{"oldId":"b-383a73206e42344d04891dc6","targetId":"b-383a73206e42344d04891dc6","page":"reading-opening","operation":"move","beforeSHA256":"c7ddd926153f66a12ff50445e4f0c91d5b1b3bdd966cdc956f2f98dfc816e780","afterSHA256":"c7ddd926153f66a12ff50445e4f0c91d5b1b3bdd966cdc956f2f98dfc816e780","reason":"Same source body in authored semantic page"},{"oldId":"b-635f21672c1ae904d79e41d4","targetId":"b-635f21672c1ae904d79e41d4","page":"reading-opening","operation":"move","beforeSHA256":"87299f7751b6bc58e001a1cac6a5323dd0001ad6d4f42408db1fc6f2d370de31","afterSHA256":"87299f7751b6bc58e001a1cac6a5323dd0001ad6d4f42408db1fc6f2d370de31","reason":"Same source body in authored semantic page"},{"oldId":"b-e3a05d77f1b6c351546060c0","targetId":"b-e3a05d77f1b6c351546060c0","page":"reading-opening","operation":"move","beforeSHA256":"9d9abf237d90a9561e1846c380f3fcdce763427c83b474ae06bfeb3ad755dcfb","afterSHA256":"9d9abf237d90a9561e1846c380f3fcdce763427c83b474ae06bfeb3ad755dcfb","reason":"Same source body in authored semantic page"},{"oldId":"block-44a741e9a3334aa4b16f140a98179497--索引热身仍然有用但不能叫学到了语义","targetId":"b-383a73206e42344d04891dc6","operation":"retain-source-identity"}],"blocks":[{"id":"b-9f8c14f769da70319f9a978f","type":"p","scope":"document","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/44a741e9a3334aa4b16f140a98179497.html#b-9f8c14f769da70319f9a978f","content":"[LAB 08 · 图像重建：遮挡损失与表示评价](/course/notebooks/b5ba27f2c5ba4ec0922208a7d5dc80a4.html)","sha256":"4730e90285e279b2564c179018b9df76aafd9db5dd2729f0f687ac380af591ed","chapter":{"id":"course","title":"索引热身仍然有用，但不能叫学到了语义"},"unit":{"id":"notebook-blocks/44a741e9a3334aa4b16f140a98179497","title":"索引热身仍然有用，但不能叫学到了语义"},"page":{"id":"reading-opening","title":"索引热身仍然有用，但不能叫学到了语义","number":1},"sectionTitle":"索引热身仍然有用，但不能叫学到了语义","currentQuestion":"索引热身仍然有用，但不能叫学到了语义","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":null,"nextBlock":"b-f25a22ad755e4d97876c38ba","prerequisites":[],"relatedBlocks":[]},{"id":"b-f25a22ad755e4d97876c38ba","type":"h1","scope":"document","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/44a741e9a3334aa4b16f140a98179497.html#b-f25a22ad755e4d97876c38ba","content":"# 索引热身仍然有用，但不能叫学到了语义","sha256":"775f5c1da6e138e2f96d7434e094257b8f9c096e37cc6095bd9ad24db3048ed7","chapter":{"id":"course","title":"索引热身仍然有用，但不能叫学到了语义"},"unit":{"id":"notebook-blocks/44a741e9a3334aa4b16f140a98179497","title":"索引热身仍然有用，但不能叫学到了语义"},"page":{"id":"reading-opening","title":"索引热身仍然有用，但不能叫学到了语义","number":1},"sectionTitle":"索引热身仍然有用，但不能叫学到了语义","currentQuestion":"索引热身仍然有用，但不能叫学到了语义","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-9f8c14f769da70319f9a978f","nextBlock":"b-c43876f69b790a6f41c0c96b","prerequisites":[{"id":"b-9f8c14f769da70319f9a978f","url":"#b-9f8c14f769da70319f9a978f","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-c43876f69b790a6f41c0c96b","type":"p","scope":"document","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/44a741e9a3334aa4b16f140a98179497.html#b-c43876f69b790a6f41c0c96b","content":"按问题继续","sha256":"e91f24e4e4ca40e2099a0d81d30db6568f4bf2074b499eeee6e3959617bd97ac","chapter":{"id":"course","title":"索引热身仍然有用，但不能叫学到了语义"},"unit":{"id":"notebook-blocks/44a741e9a3334aa4b16f140a98179497","title":"索引热身仍然有用，但不能叫学到了语义"},"page":{"id":"reading-opening","title":"索引热身仍然有用，但不能叫学到了语义","number":1},"sectionTitle":"索引热身仍然有用，但不能叫学到了语义","currentQuestion":"索引热身仍然有用，但不能叫学到了语义","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-f25a22ad755e4d97876c38ba","nextBlock":"b-0e456ea9460ec5aa956f736c","prerequisites":[{"id":"b-f25a22ad755e4d97876c38ba","url":"#b-f25a22ad755e4d97876c38ba","role":"section-title"},{"id":"b-9f8c14f769da70319f9a978f","url":"#b-9f8c14f769da70319f9a978f","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-0e456ea9460ec5aa956f736c","type":"p","scope":"document","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/44a741e9a3334aa4b16f140a98179497.html#b-0e456ea9460ec5aa956f736c","content":"索引恢复、去噪/遮挡ConvAE训练、PCA基线、独立冻结评价","sha256":"0f845ef31b98ed8c96f689fea3088b0a7482be32b2d5510c83f9fcbb05da4c9d","chapter":{"id":"course","title":"索引热身仍然有用，但不能叫学到了语义"},"unit":{"id":"notebook-blocks/44a741e9a3334aa4b16f140a98179497","title":"索引热身仍然有用，但不能叫学到了语义"},"page":{"id":"reading-opening","title":"索引热身仍然有用，但不能叫学到了语义","number":1},"sectionTitle":"索引热身仍然有用，但不能叫学到了语义","currentQuestion":"索引热身仍然有用，但不能叫学到了语义","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-c43876f69b790a6f41c0c96b","nextBlock":"b-383a73206e42344d04891dc6","prerequisites":[{"id":"b-f25a22ad755e4d97876c38ba","url":"#b-f25a22ad755e4d97876c38ba","role":"section-title"},{"id":"b-9f8c14f769da70319f9a978f","url":"#b-9f8c14f769da70319f9a978f","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-383a73206e42344d04891dc6","type":"h2","scope":"document","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/44a741e9a3334aa4b16f140a98179497.html#b-383a73206e42344d04891dc6","content":"## 索引热身仍然有用，但不能叫学到了语义","sha256":"c7ddd926153f66a12ff50445e4f0c91d5b1b3bdd966cdc956f2f98dfc816e780","chapter":{"id":"course","title":"索引热身仍然有用，但不能叫学到了语义"},"unit":{"id":"notebook-blocks/44a741e9a3334aa4b16f140a98179497","title":"索引热身仍然有用，但不能叫学到了语义"},"page":{"id":"reading-opening","title":"索引热身仍然有用，但不能叫学到了语义","number":1},"sectionTitle":"索引热身仍然有用，但不能叫学到了语义","currentQuestion":"索引热身仍然有用，但不能叫学到了语义","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-0e456ea9460ec5aa956f736c","nextBlock":"b-635f21672c1ae904d79e41d4","prerequisites":[{"id":"b-f25a22ad755e4d97876c38ba","url":"#b-f25a22ad755e4d97876c38ba","role":"section-title"},{"id":"b-9f8c14f769da70319f9a978f","url":"#b-9f8c14f769da70319f9a978f","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-635f21672c1ae904d79e41d4","type":"p","scope":"document","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/44a741e9a3334aa4b16f140a98179497.html#b-635f21672c1ae904d79e41d4","content":"先保留旧版0到15序列的可见均值填充。4个可见值时隐藏MSE为19.9167，8个可见值时为21.25；可见数更多却不一定降低这个均值代理，因为选中的位置和值都改变了，没有模型学习。","sha256":"87299f7751b6bc58e001a1cac6a5323dd0001ad6d4f42408db1fc6f2d370de31","chapter":{"id":"course","title":"索引热身仍然有用，但不能叫学到了语义"},"unit":{"id":"notebook-blocks/44a741e9a3334aa4b16f140a98179497","title":"索引热身仍然有用，但不能叫学到了语义"},"page":{"id":"reading-opening","title":"索引热身仍然有用，但不能叫学到了语义","number":1},"sectionTitle":"索引热身仍然有用，但不能叫学到了语义","currentQuestion":"索引热身仍然有用，但不能叫学到了语义","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-383a73206e42344d04891dc6","nextBlock":"b-e3a05d77f1b6c351546060c0","prerequisites":[{"id":"b-383a73206e42344d04891dc6","url":"#b-383a73206e42344d04891dc6","role":"section-title"},{"id":"b-9f8c14f769da70319f9a978f","url":"#b-9f8c14f769da70319f9a978f","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-e3a05d77f1b6c351546060c0","type":"p","scope":"document","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/44a741e9a3334aa4b16f140a98179497.html#b-e3a05d77f1b6c351546060c0","content":"接着随机打乱16个索引，保留4个，其余放mask标记−1；用逆排列恢复原位置。验证恢复后可见值位于正确坐标。这个断言证明的是位置对应，不是重建质量。","sha256":"9d9abf237d90a9561e1846c380f3fcdce763427c83b474ae06bfeb3ad755dcfb","chapter":{"id":"course","title":"索引热身仍然有用，但不能叫学到了语义"},"unit":{"id":"notebook-blocks/44a741e9a3334aa4b16f140a98179497","title":"索引热身仍然有用，但不能叫学到了语义"},"page":{"id":"reading-opening","title":"索引热身仍然有用，但不能叫学到了语义","number":1},"sectionTitle":"索引热身仍然有用，但不能叫学到了语义","currentQuestion":"索引热身仍然有用，但不能叫学到了语义","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-635f21672c1ae904d79e41d4","nextBlock":null,"prerequisites":[{"id":"b-383a73206e42344d04891dc6","url":"#b-383a73206e42344d04891dc6","role":"section-title"},{"id":"b-9f8c14f769da70319f9a978f","url":"#b-9f8c14f769da70319f9a978f","role":"problem-context"}],"relatedBlocks":[]}]}