tf.keras.backend.in_train_phase
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Selects x in train phase, and alt otherwise.
tf.keras.backend.in_train_phase(
x, alt, training=None
)
Note that alt should have the same shape as x.
Arguments |
|---|
x
|
What to return in train 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 the training flag.
the training flag defaults to K.learning_phase().
|
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Last updated 2020-10-01 UTC.
[null,null,["Last updated 2020-10-01 UTC."],[],[],null,["# tf.keras.backend.in_train_phase\n\n\u003cbr /\u003e\n\n|-----------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------|\n| [TensorFlow 1 version](/versions/r1.15/api_docs/python/tf/keras/backend/in_train_phase) | [View source on GitHub](https://github.com/tensorflow/tensorflow/blob/v2.2.0/tensorflow/python/keras/backend.py#L4331-L4373) |\n\nSelects `x` in train phase, and `alt` otherwise.\n\n#### View aliases\n\n\n**Compat aliases for migration**\n\nSee\n[Migration guide](https://www.tensorflow.org/guide/migrate) for\nmore details.\n\n[`tf.compat.v1.keras.backend.in_train_phase`](/api_docs/python/tf/keras/backend/in_train_phase)\n\n\u003cbr /\u003e\n\n tf.keras.backend.in_train_phase(\n x, alt, training=None\n )\n\nNote that `alt` should have the *same shape* as `x`.\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Arguments --------- ||\n|------------|----------------------------------------------------------------------------------------------|\n| `x` | What to return in train phase (tensor or callable that returns a tensor). |\n| `alt` | What to return otherwise (tensor or callable that returns a tensor). |\n| `training` | Optional scalar tensor (or Python boolean, or Python integer) specifying the learning phase. |\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Returns ------- ||\n|---|---|\n| Either `x` or `alt` based on the `training` flag. the `training` flag defaults to `K.learning_phase()`. ||\n\n\u003cbr /\u003e"]]
TensorFlow 1 version
View source on GitHub