SVD算法不光可以用于降维算法中的特征分解，还可以用于推荐系统，以及自然语言处理等领域。是很多机器学习算法的基石。内含电影平分数据集(SVD algorithm can be used not only in feature decomposition of dimension reduction algorithm, but also in recommendation system, natural language processing and other fields. Is the c