embedding_size: 10                # (int) The embedding size of features. 
mlp_hidden_size: [256, 256, 256]  # (list of int) The hidden size of MLP layers.
cross_layer_num: 6                # (int) The number of cross layers. 
reg_weight: 2                     # (int) The L2 regularization weight.
dropout_prob: 0.2                 # (float) The dropout rate.