title: replicate a row tensor using tf.tile?
body: <p>I have a tensor which is simply a vector, <code>vector = [0.5 0.4]</code> and tf.shape indicates that it has shape=(1,), I would like to replicate the vector m times and have the shape of [m, 2], so for m = 2, <code>matrix = [[0.5 0.4], [0.5 0.4]]</code>. How do I achieve that using tf.tile?</p>