Retrieves a Keras loss as a function
/Loss
class instance.
tf.keras.losses.get(
identifier
)
The identifier
may be the string name of a loss function or Loss
class.
loss = tf.keras.losses.get("categorical_crossentropy")
type(loss)
<class 'function'>
loss = tf.keras.losses.get("CategoricalCrossentropy")
type(loss)
<class '...tensorflow.python.keras.losses.CategoricalCrossentropy'>
You can also specify config
of the loss to this function by passing dict
containing class_name
and config
as an identifier. Also note that the
class_name
must map to a Loss
class
identifier = {"class_name": "CategoricalCrossentropy",
"config": {"from_logits": True} }
loss = tf.keras.losses.get(identifier)
type(loss)
<class '...tensorflow.python.keras.losses.CategoricalCrossentropy'>
Arguments |
identifier
|
A loss identifier. One of None or string name of a loss
function/class or loss configuration dictionary or a loss function or a
loss class instance
|
Returns |
A Keras loss as a function / Loss class instance.
|
Raises |
ValueError
|
If identifier cannot be interpreted.
|