Computes the sum of elements across dimensions of a tensor. x = tf.constant([[1, 1, 1], [1, 1, 1]]) tf.reduce_sum(x) # 6 tf.reduce_sum(x, 0) # [2, 2, 2] tf.reduce_sum(x, 1) # [3, 3] tf.reduce_sum(x, 1, keepdims=True) # [[3], [3]] tf.reduce_sum(x, [0, 1]) # 6
