How to calculate the Cosine similarity between two tensors?

Question

I have two normalized tensors and I need to calculate the cosine similarity between these tensors. How do I do it with TensorFlow?

cosine(normalize_a,normali         


        

Answer 1

Times change. With the latest TF API, this can be computed by calling tf.losses.cosine_distance.

Example:

import tensorflow as tf
import numpy as np


x = tf.constant(np.random.uniform(-1, 1, 10)) 
y = tf.constant(np.random.uniform(-1, 1, 10))
s = tf.losses.cosine_distance(tf.nn.l2_normalize(x, 0), tf.nn.l2_normalize(y, 0), dim=0)
print(tf.Session().run(s))

Of course, 1 - s is the cosine similarity!