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XOR：信息保留与线性读出](/course/notebooks/33066318f5884adc8417068df0f40431.html)","sha256":"a5454a2eaf6526d406672cf2fd64647bf6756311358ae3b16c90564051decb92","chapter":{"id":"course","title":"已完成的基准运行"},"unit":{"id":"notebook-blocks/202bf43aba9a4bc88dd38e6ce6b76405","title":"已完成的基准运行"},"page":{"id":"reading-opening","title":"已完成的基准运行","number":1},"sectionTitle":"已完成的基准运行","currentQuestion":"已完成的基准运行","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":null,"nextBlock":"b-5cb0cbfb08c1fbf3d75e0f26","prerequisites":[],"relatedBlocks":[]},{"id":"b-5cb0cbfb08c1fbf3d75e0f26","type":"h1","scope":"document","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/202bf43aba9a4bc88dd38e6ce6b76405.html#b-5cb0cbfb08c1fbf3d75e0f26","content":"# 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进程的实际标准输出，云端执行另行记录。","sha256":"ff4e2caa2efcd2a7e24e155ecad4f46e58bf2f1bb641ebcf47707b657cc53d56","chapter":{"id":"course","title":"已完成的基准运行"},"unit":{"id":"notebook-blocks/202bf43aba9a4bc88dd38e6ce6b76405","title":"已完成的基准运行"},"page":{"id":"reading-opening","title":"已完成的基准运行","number":1},"sectionTitle":"已完成的基准运行","currentQuestion":"已完成的基准运行","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-40adbd36cac4ae74411a9964","nextBlock":"b-0e82c7542667933bf0198adc","prerequisites":[{"id":"b-40adbd36cac4ae74411a9964","url":"#b-40adbd36cac4ae74411a9964","role":"section-title"},{"id":"b-6401bfe357943f2b8bb11809","url":"#b-6401bfe357943f2b8bb11809","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-0e82c7542667933bf0198adc","type":"pre","scope":"document","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/202bf43aba9a4bc88dd38e6ce6b76405.html#b-0e82c7542667933bf0198adc","content":"```\nI(h;y), I(z;y), I(constant;y) bits 1.0 1.0 0.0\nI(h;h), I(h;z) bits 2.0 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dependent\n\n```","sha256":"28a56258967a76ffb626729cc878f288e95f4dac25e56b04964c0de1025e383e","chapter":{"id":"course","title":"已完成的基准运行"},"unit":{"id":"notebook-blocks/202bf43aba9a4bc88dd38e6ce6b76405","title":"已完成的基准运行"},"page":{"id":"reading-opening","title":"已完成的基准运行","number":1},"sectionTitle":"已完成的基准运行","currentQuestion":"已完成的基准运行","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-7034d386eefb3f74c0bff2e8","nextBlock":"b-3e40a2661c1ad9fff085ef51","prerequisites":[{"id":"b-40adbd36cac4ae74411a9964","url":"#b-40adbd36cac4ae74411a9964","role":"section-title"},{"id":"b-6401bfe357943f2b8bb11809","url":"#b-6401bfe357943f2b8bb11809","role":"problem-context"}],"relatedBlocks":[]},{"id":"b-3e40a2661c1ad9fff085ef51","type":"p","scope":"document","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/202bf43aba9a4bc88dd38e6ce6b76405.html#b-3e40a2661c1ad9fff085ef51","content":"h→z是确定映射，数据处理不能创造关于y的新信息；这里I(h;y)=I(z;y)=1bit，但z降低了读出难度。若下游任务换成“x₁是否为正”，z将无法区分两种答案。这给颜色增强提供了精确类比：某个目标需要忽略颜色，不代表其他目标也不需要。逻辑回归h的对称初始化停在0.5符合凸损失对称最优，不能把二分类threshold的偶然准确率称为XOR已学会。连接LAB06的h/z实训练，再检查有限样本与函数类的限制。","sha256":"c932a40493a7bfe15ab86eaa55efd1a0ccd9796d87cfccb7f7a30de81f06475d","chapter":{"id":"course","title":"已完成的基准运行"},"unit":{"id":"notebook-blocks/202bf43aba9a4bc88dd38e6ce6b76405","title":"已完成的基准运行"},"page":{"id":"reading-opening","title":"已完成的基准运行","number":1},"sectionTitle":"已完成的基准运行","currentQuestion":"已完成的基准运行","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-0e82c7542667933bf0198adc","nextBlock":null,"prerequisites":[{"id":"b-40adbd36cac4ae74411a9964","url":"#b-40adbd36cac4ae74411a9964","role":"section-title"},{"id":"b-6401bfe357943f2b8bb11809","url":"#b-6401bfe357943f2b8bb11809","role":"problem-context"}],"relatedBlocks":[]}]}