理解奇异值分解SVD和潜在语义索引LSI(Latent Semantic Indexing)
https://blog.csdn.net/xiaocong1990/article/details/54909126
https://www.cnblogs.com/bentuwuying/p/6219970.html
https://blog.csdn.net/callejon/article/details/49811819
https://blog.csdn.net/xiaocong1990/article/details/54909126
https://www.cnblogs.com/bentuwuying/p/6219970.html
https://blog.csdn.net/callejon/article/details/49811819