import tensorflow.contrib as contrib

            dropout3_1 = contrib.layers.dropout(stitch3_1, keep_prob=keep_prob, is_training=is_training,
                                                scope="dropout3_1")
            dropout3_2 = contrib.layers.dropout(stitch3_2, keep_prob=keep_prob, is_training=is_training,
                                                scope="dropout3_2")
