原文发表于:2020-12-14
解决方案
position作为特征
训练是加入位置信息
预估时设置为默认值
缺点:会造成非默认值的预估偏差
Shallow Tower
shallow tower建模偏差特征
训练时随机drop掉
预测时直接丢掉shallow tower
PAL
https://www.researchgate.net/publication/335771749_PAL_a_position-bias_aware_learning_framework_for_CTR_prediction_in_live_recommender_systems
DPIN
https://arxiv.org/pdf/2106.05482.pdf
参考
- PAL: a position-bias aware learning framework for CTR prediction in live recommender systems
- https://zhuanlan.zhihu.com/p/145448160?from_voters_page=true
- 美团DPIN https://blog.csdn.net/m0_47256162/article/details/125527968