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jeremyjordan
/ sgdr.py
Last active
December 4, 2023 13:41
Keras Callback for implementing Stochastic Gradient Descent with Restarts
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| from keras.callbacks import Callback | |
| import keras.backend as K | |
| import numpy as np | |
| class SGDRScheduler(Callback): | |
| '''Cosine annealing learning rate scheduler with periodic restarts. | |
| # Usage | |
| ```python | |
| schedule = SGDRScheduler(min_lr=1e-5, |
enaeseth
/ objectid_to_uuid.py
Created
June 12, 2013 19:29
Convert a MongoDB ObjectID to a valid, semantically similar UUID.
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| """ | |
| Convert a MongoDB ObjectID to a version-1 UUID. | |
| Python 2.7+ required for datetime.timedelta.total_seconds(). | |
| ObjectID: | |
| - UNIX timestamp (32 bits) | |
| - Machine identifier (24 bits) | |
| - Process ID (16 bits) | |
| - Counter (24 bits) |