tf.keras.backend.stack

TensorFlow 1 version View source on GitHub

Stacks a list of rank R tensors into a rank R+1 tensor.

tf.keras.backend.stack(
    x, axis=0
)

Arguments:

  • x: List of tensors.
  • axis: Axis along which to perform stacking.

Returns:

A tensor.

Example:

a = tf.constant([[1, 2],[3, 4]]) 
b = tf.constant([[10, 20],[30, 40]]) 
tf.keras.backend.stack((a, b)) 
<tf.Tensor: shape=(2, 2, 2), dtype=int32, numpy= 
array([[[ 1,  2], 
        [ 3,  4]], 
       [[10, 20], 
        [30, 40]]], dtype=int32)>