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旧版热身（历史参考）","sha256":"22776016622c2addaf705c770c88971c82973c938ae33e183a9feb3b49e49de1","chapter":{"id":"course","title":"旧版热身（历史参考）"},"unit":{"id":"notebook-blocks/eec26396f50540529159208805f0276f","title":"旧版热身（历史参考）"},"page":{"id":"reading-opening","title":"旧版热身（历史参考）","number":1},"sectionTitle":"旧版热身（历史参考）","currentQuestion":"旧版热身（历史参考）","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-01a3b39ee1447f47cb2b0936","nextBlock":"b-5c2c1c1e5e07b0db756d8131","prerequisites":[{"id":"b-e31d2a72fc90ae18f5802f11","url":"#b-e31d2a72fc90ae18f5802f11","role":"section-title"},{"id":"b-90e815323a3a90d985e0b391","url":"#b-90e815323a3a90d985e0b391","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-5c2c1c1e5e07b0db756d8131","type":"p","scope":"document","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/eec26396f50540529159208805f0276f.html#b-5c2c1c1e5e07b0db756d8131","content":"旧版热身仅保留为历史参考，不参与当前基准运行；当前解释与计算以上方完整实验为准。旧版的 identity is preserved 表述已纠正：z 保留 XOR 标签信息，但没有保留四个角点的完整身份。","sha256":"bc090315a57a3fe90a4b713fa79244ee0f6fa80712bcf0ffd9e0037d0e061eef","chapter":{"id":"course","title":"旧版热身（历史参考）"},"unit":{"id":"notebook-blocks/eec26396f50540529159208805f0276f","title":"旧版热身（历史参考）"},"page":{"id":"reading-opening","title":"旧版热身（历史参考）","number":1},"sectionTitle":"旧版热身（历史参考）","currentQuestion":"旧版热身（历史参考）","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-772c6ec752c8de8ec0a9dd9e","nextBlock":null,"prerequisites":[{"id":"b-772c6ec752c8de8ec0a9dd9e","url":"#b-772c6ec752c8de8ec0a9dd9e","role":"section-title"},{"id":"b-90e815323a3a90d985e0b391","url":"#b-90e815323a3a90d985e0b391","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-96d710d93364dea6d0eaf9a8","type":"h4","scope":"reading-section-1","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/eec26396f50540529159208805f0276f.html#b-96d710d93364dea6d0eaf9a8","content":"#### 展开查看旧版代码（仅展示，不执行）","sha256":"b5f2d755e2ad018e90a28a20600c873333e0691cce1a7f018f374a7d482cbaf3","chapter":{"id":"course","title":"旧版热身（历史参考）"},"unit":{"id":"notebook-blocks/eec26396f50540529159208805f0276f","title":"旧版热身（历史参考）"},"page":{"id":"reading-section-1","title":"展开查看旧版代码（仅展示，不执行）","number":2},"sectionTitle":"展开查看旧版代码（仅展示，不执行）","currentQuestion":"展开查看旧版代码（仅展示，不执行）","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":null,"nextBlock":"b-ff986112441ec79db3a2d773","prerequisites":[],"relatedBlocks":[]},{"id":"b-ff986112441ec79db3a2d773","type":"pre","scope":"document","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/eec26396f50540529159208805f0276f.html#b-ff986112441ec79db3a2d773","content":"```\nh=[(-1,-1),(-1,1),(1,-1),(1,1)]; y=[0,1,1,0]; z=[a*b for a,b in h]; pred=[int(v<0) for v in z]\nprint('h unique',len(set(h)),'nonlinear feature',z,'readout',pred); assert pred==y\nprint('identity is preserved; linear separability is a different question')\n\n```","sha256":"c035f8bf568a86c650d884058bf3e1b3afce819c27a30ec54c696bf09d9c320c","chapter":{"id":"course","title":"旧版热身（历史参考）"},"unit":{"id":"notebook-blocks/eec26396f50540529159208805f0276f","title":"旧版热身（历史参考）"},"page":{"id":"reading-section-1","title":"展开查看旧版代码（仅展示，不执行）","number":2},"sectionTitle":"展开查看旧版代码（仅展示，不执行）","currentQuestion":"展开查看旧版代码（仅展示，不执行）","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-96d710d93364dea6d0eaf9a8","nextBlock":null,"prerequisites":[{"id":"b-96d710d93364dea6d0eaf9a8","url":"#b-96d710d93364dea6d0eaf9a8","role":"section-title"}],"relatedBlocks":[]}]}