用于协同过滤推荐算法，svd矩阵分解算法 C++实现-Matrix Factorization , performs well on the large, sparse, and very imbalanced Netflix dataset

基于用户的协同过滤推荐算法实现食品推荐功能，基于不同用户评分矩阵实现食品的分类。(Based on user collaborative filtering recommendation algorithm, food recommendation function is realized, and food classification is achieved based on different user rating matrix.)