参考
- https://medium.com/@nikhilbd/pointwise-vs-pairwise-vs-listwise-learning-to-rank-80a8fe8fadfd
- https://zhuanlan.zhihu.com/p/111636490
个人理解
- 三者的区别在于在给出相关性得分时能看到几个文档。（At a high level, pointwise, pairwise and listwise approaches differ in how many documents you consider at a time in your loss function when training your model.）
- 性能依次：listwise > pairwise > pointwise
