import tensorflow as tf

        
        self.x0_tf = tf.placeholder(tf.float32, shape=(None, self.x0.shape[1]))
        self.x1_tf = tf.placeholder(tf.float32, shape=(None, self.x1.shape[1]))
        self.u0_tf = tf.placeholder(tf.float32, shape=(None, self.u0.shape[1]))
