tf.keras.backend.dot

TensorFlow 1 version View source on GitHub

Multiplies 2 tensors (and/or variables) and returns a tensor.

tf.keras.backend.dot(
    x, y
)

When attempting to multiply a nD tensor with a nD tensor, it reproduces the Theano behavior. (e.g. (2, 3) * (4, 3, 5) -> (2, 4, 5))

Arguments:

  • x: Tensor or variable.
  • y: Tensor or variable.

Returns:

A tensor, dot product of x and y.

Examples:

dot product between tensors

x = tf.keras.backend.placeholder(shape=(2, 3)) y = tf.keras.backend.placeholder(shape=(3, 4)) xy = tf.keras.backend.dot(x, y) xy

dot product between tensors

x = tf.keras.backend.placeholder(shape=(32, 28, 3)) y = tf.keras.backend.placeholder(shape=(3, 4)) xy = tf.keras.backend.dot(x, y) xy

Theano-like behavior example

x = tf.keras.backend.random_uniform_variable(shape=(2, 3), low=0, high=1) y = tf.keras.backend.ones((4, 3, 5)) xy = tf.keras.backend.dot(x, y) tf.keras.backend.int_shape(xy) (2, 4, 5)