fix fat

Author: wangzhen38

models/rank/fat_deepffm/net.py

@@ -193,6 +193,7 @@ def __init__(self,
             if acts[i] == 'relu':
                 act = paddle.nn.ReLU()
                 self.add_sublayer('act_%d' % i, act)
+                self._mlp_layers.append(act)
 
     def forward(self, feat_embeddings):
         y_dnn = paddle.reshape(feat_embeddings, [feat_embeddings.shape[0], -1])