in ncf.py [0:0]
def _get_user_embedding_layers(inputs, emb_dim):
""" create user embeddings """
user_gmf_emb = tf.keras.layers.Dense(emb_dim, activation='relu')(inputs)
user_mlp_emb = tf.keras.layers.Dense(emb_dim, activation='relu')(inputs)
return user_gmf_emb, user_mlp_emb