MATLAB 实现的概率矩阵分解，可以用于社交网络推荐，将评分矩阵分解为两个低维的用户和商品特征矩阵。代码中需要在load位置添加自己试验所需的数据集。-MATLAB realization probability matrix decomposition can be used for social networking recommendation, the scoring matrix is ​ ​ decomposed into two low dimensional