Identity matrix

An identity matrix is a matrix I that does not change any vector, like V, when multiplied by I.

The following example shows how to get the identity matrix for a given size:

import tensorflow as tf
 
identity = tf.eye(3, 3)
 
with tf.Session() as sess:
   print(sess.run(identity))  

The output of this is shown as follows:

[[ 1.  0.  0.] [ 0.  1.  0.] [ 0.  0.  1.]]