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keras callbacks learning rate scheduler

def scheduler(epoch, lr):
	if epoch < 10:
		return lr
	else:
		return lr * tf.math.exp(-0.1)
callback = tf.keras.callbacks.LearningRateScheduler(scheduler)
model.fit(np.arange(100).reshape(5, 20), np.zeros(5),
	epochs=15, callbacks=[callback], verbose=0)

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keras callbacks learning rate scheduler

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