DCN 深度交叉网络

代替简单全连接网络

Cross Layer

Skip Connection (Residual connection)

$x_{i+1}=X_i\circ (W_ix_i b_i)+x_i$

Cross Network

参考文献

1. Ruoxi Wang et al.DCN V2:Improved Deep Cross Network and Practical Lessons for Web-scale Learning to Rank Systems.In WWW,2021.
2. Ruoxi Wang et al.Deep Cross Network for Ad Click Predictions.In ADKDD,2017.

DCN

业界普遍使用，既可以召回也可以排序