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从源代码剖析Mahout推荐引擎 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...无打分的偏好数据。
相似度算法介绍，摘自：http://www.cnblogs.com/dlts26/archive/2012/06/20/2555772.html
5. 近邻算法工具集
近邻算法只对于UserCF适用，通过近邻算法给相似的用户进行排序，选出前N个最相似的，作为最终推荐的参考的...
Can I assume (bool)true == (int)1 for any C++ compiler?
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