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
)

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

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: id=146, shape=(2, 2, 2), dtype=int32, numpy=
    array([[[ 1,  2],
            [ 3,  4]],
           [[10, 20],
            [30, 40]]], dtype=int32)>