How to explicitly broadcast a tensor to match another's shape in tensorflow?

Question

I have three tensors, A, B and C in tensorflow, A and B are both of shape (m, n, r), C is a binary tensor of sha

Answer 1

Here's a dirty hack:

import tensorflow as tf

def broadcast(tensor, shape):
    return tensor + tf.zeros(shape, dtype=tensor.dtype)

A = tf.random_normal([20, 100, 10])
B = tf.random_normal([20, 100, 10])
C = tf.random_normal([20, 100, 1])

C = broadcast(C, A.shape)
D = tf.select(C, A, B)