tf.keras.callbacks.ReduceLROnPlateau

Reduce learning rate when a metric has stopped improving.

Inherits From: Callback

tf.keras.callbacks.ReduceLROnPlateau(
    monitor='val_loss',
    factor=0.1,
    patience=10,
    verbose=0,
    mode='auto',
    min_delta=0.0001,
    cooldown=0,
    min_lr=0,
    **kwargs
)

Models often benefit from reducing the learning rate by a factor of 2-10 once learning stagnates. This callback monitors a quantity and if no improvement is seen for a 'patience' number of epochs, the learning rate is reduced.

Example:

reduce_lr = ReduceLROnPlateau(monitor='val_loss', factor=0.2,
                              patience=5, min_lr=0.001)
model.fit(X_train, Y_train, callbacks=[reduce_lr])

Args
monitor	quantity to be monitored.
factor	factor by which the learning rate will be reduced. new_lr = lr * factor.
patience	number of epochs with no improvement after which learning rate will be reduced.
verbose	int. 0: quiet, 1: update messages.
mode	one of {'auto', 'min', 'max'}. In 'min' mode, the learning rate will be reduced when the quantity monitored has stopped decreasing; in 'max' mode it will be reduced when the quantity monitored has stopped increasing; in 'auto' mode, the direction is automatically inferred from the name of the monitored quantity.
min_delta	threshold for measuring the new optimum, to only focus on significant changes.
cooldown	number of epochs to wait before resuming normal operation after lr has been reduced.
min_lr	lower bound on the learning rate.

Methods

in_cooldown

View source

in_cooldown()

set_model

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set_model(
    model
)

set_params

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set_params(
    params
)