urnn_cell.py 文件源码

def mul(self, z):
        v = tf.expand_dims(self.v, 1) # [num_units, 1]
        vstar = tf.conj(v) # [num_units, 1]
        vstar_z = tf.matmul(z, vstar) #[batch_size, 1]
        sq_norm = tf.reduce_sum(tf.abs(self.v)**2) # [1]
        factor = (2 / tf.complex(sq_norm, 0.0))
        return z - factor * tf.matmul(vstar_z, tf.transpose(v))

# Permutation unitary matrix