爱奇艺

https://www.6aiq.com/article/1614422394959

腾讯音乐

https://cloud.tencent.com/developer/article/2226972

快手

https://zhuanlan.zhihu.com/p/520181137

1 rule based

2 tree based

xgboost/lightgbm/catboost + lambdamart ？？

xgboost/lightgbm/catboost + lr ？？

xgboost/lightgbm/catboost + yetirankpairwise

3 双塔nn

4 交互式nn

5 精排模型蒸馏

6 pretrain model