tf.keras.backend.in_test_phase

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Selects x in test phase, and alt otherwise.

Aliases:

  • tf.compat.v1.keras.backend.in_test_phase
  • tf.compat.v2.keras.backend.in_test_phase
tf.keras.backend.in_test_phase(
    x,
    alt,
    training=None
)

Note that alt should have the same shape as x.

Arguments:

  • x: What to return in test phase (tensor or callable that returns a tensor).
  • alt: What to return otherwise (tensor or callable that returns a tensor).
  • training: Optional scalar tensor (or Python boolean, or Python integer) specifying the learning phase.

Returns:

Either x or alt based on K.learning_phase.

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