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实现代码","currentQuestion":"5. 信息没留下，放大网格能找回来吗？ · 实现代码","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-6f201670d008afe057ece290","nextBlock":"b-e2e58f606e85fba1aa736686","prerequisites":[{"id":"b-9e261b15a0ba09003d0c3b34","url":"#b-9e261b15a0ba09003d0c3b34","role":"section-title"},{"id":"b-0f336cec153b554d1ac97bf0","url":"#b-0f336cec153b554d1ac97bf0","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-e2e58f606e85fba1aa736686","type":"pre","scope":"document","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/f875004afbdc40f28e971ad3eafb9769.html#b-e2e58f606e85fba1aa736686","content":"```\n# 独立 CPU 练习：表示碰撞与新增通道。\nA = [[1.0,0.0],[1.0,0.0]]\nB = [[0.0,1.0],[0.0,1.0]]\ndef encode(matrix):\n    mean = sum(map(sum,matrix))/4\n    left_minus_right = sum(row[0] for row in matrix)/2-sum(row[1] for row in matrix)/2\n    return mean,left_minus_right\nfa,fb = encode(A),encode(B)\nassert fa[0]==fb[0]==0.5\nassert fa==(0.5,1.0) and fb==(0.5,-1.0)\nfor label,matrix in [('甲',A),('乙',B)]:\n    average,side = encode(matrix)\n    enlarged = [[average]*4 for _ in range(4)]\n    print(label,'只留均值:',average,'放大后首行:',enlarged[0], '新增左右差:',side)\nprint('同一个均值放大后仍相同；差别来自编码时保存了新的通道。')\n```","sha256":"b1bd03e79cc5bb9835393d1cc7310cde4635979e1704d3fcb1ee99ccc811225d","chapter":{"id":"course","title":"5. 信息没留下，放大网格能找回来吗？ · 实现代码"},"unit":{"id":"notebook-blocks/f875004afbdc40f28e971ad3eafb9769","title":"5. 信息没留下，放大网格能找回来吗？ · 实现代码"},"page":{"id":"reading-opening","title":"5. 信息没留下，放大网格能找回来吗？ · 实现代码","number":1},"sectionTitle":"5. 信息没留下，放大网格能找回来吗？ · 实现代码","currentQuestion":"5. 信息没留下，放大网格能找回来吗？ · 实现代码","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-580428e9a192e8c389cd7c7d","nextBlock":null,"prerequisites":[{"id":"b-9e261b15a0ba09003d0c3b34","url":"#b-9e261b15a0ba09003d0c3b34","role":"section-title"},{"id":"b-0f336cec153b554d1ac97bf0","url":"#b-0f336cec153b554d1ac97bf0","role":"problem-context"}],"relatedBlocks":[]}]}