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* [ 主成分分析(PCA)原理详解] ( https://blog.csdn.net/program_developer/article/details/80632779 )
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* [ 图文并茂的PCA教程] ( https://blog.csdn.net/hustqb/article/details/78394058 )
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+ * [ PCA数学原理] ( http://www.360doc.com/content/13/1124/02/9482_331688889.shtml )
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#### SVD
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- * [ 1. 关于奇异值分解SVD的总结(PCA、LDI)] ( https://zhuanlan.zhihu.com/p/30482640 )
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- * [ 2. 奇异值分解(SVD)] ( https://zhuanlan.zhihu.com/p/29846048 )
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- * [ 3. 奇异值分解(SVD)原理详解及推导] ( https://blog.csdn.net/zhongkejingwang/article/details/43053513 )
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- * [ 4. SVD在推荐系统中的应用详解以及算法推导] ( https://blog.csdn.net/zhongkejingwang/article/details/43083603 )
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+ * [ 强大的矩阵奇异值分解(SVD)及其应用] ( https://www.cnblogs.com/LeftNotEasy/archive/2011/01/19/svd-and-applications.html )
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+ * [ 奇异值分解(SVD)] ( https://zhuanlan.zhihu.com/p/29846048 )
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+ * [ 奇异值分解(SVD)原理详解及推导] ( https://blog.csdn.net/zhongkejingwang/article/details/43053513 )
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+ * [ SVD在推荐系统中的应用详解以及算法推导] ( https://blog.csdn.net/zhongkejingwang/article/details/43083603 )
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#### LDA
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* [ 教科书上的LDA为什么长这个样子?] ( https://zhuanlan.zhihu.com/p/42238953 )
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