at
https://github.com/HedyHu/NLPstudy/blob/master/wals_fm.py
https://github.com/she605305429/recommend_competition/tree/develop
https://github.com/stp88888/HY-2019
https://github.com/hecongqing/2017-daguan-competition
https://github.com/PiperLiu/PiperLiu-Algorithm/tree/master
https://github.com/she605305429/recommend_competition/tree/develop