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Add api MultiplicativeDecay #38250

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merged 8 commits into from
Jan 7, 2022
Merged

Add api MultiplicativeDecay #38250

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9da0de5
delete the modification of dygraph
guguguzi Dec 26, 2021
9c6f850
Merge branch 'develop' of https://github.com/PaddlePaddle/Paddle into…
guguguzi Dec 26, 2021
83b034e
Merge branch 'develop' of https://github.com/PaddlePaddle/Paddle into…
guguguzi Jan 5, 2022
0e524d7
CI
guguguzi Jan 5, 2022
30206ba
check CI
guguguzi Jan 5, 2022
e137f4b
Merge branch 'develop' of https://github.com/PaddlePaddle/Paddle into…
guguguzi Jan 5, 2022
ed015d4
modify the retrun value of get_lr
guguguzi Jan 7, 2022
628ff98
Merge branch 'develop' of https://github.com/PaddlePaddle/Paddle into…
guguguzi Jan 7, 2022
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11 changes: 11 additions & 0 deletions python/paddle/fluid/tests/unittests/test_lr_scheduler.py
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Original file line number Diff line number Diff line change
Expand Up @@ -205,6 +205,13 @@ def lambda_lr(epoch_num, learning_rate, lr_lambda, verbose=False):
return learning_rate * lr_lambda(epoch_num)


def multiplicative_lr(epoch_num, learning_rate, lr_lambda, verbose=False):
latest_lr = learning_rate
for i in range(epoch_num):
latest_lr = latest_lr * lr_lambda(i + 1)
return latest_lr


def piecewise_lr(epoch_num, boundaries, values, verbose=False):
assert len(boundaries) + 1 == len(values)
for i in range(len(boundaries)):
Expand Down Expand Up @@ -519,6 +526,10 @@ def test_scheduler(self):
"learning_rate": 0.5,
"lr_lambda": lambda x: 0.95**x,
"verbose": True
}), (multiplicative_lr, paddle.optimizer.lr.MultiplicativeDecay, {
"learning_rate": 0.5,
"lr_lambda": lambda x: 0.95,
"verbose": True
}), (cosine_annealing_lr, paddle.optimizer.lr.CosineAnnealingDecay, {
"learning_rate": 0.5,
"T_max": 10,
Expand Down
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