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wassname / keras_weighted_categorical_crossentropy.py
Last active December 19, 2023 18:17
Keras weighted categorical_crossentropy (please read comments for updated version)
"""
A weighted version of categorical_crossentropy for keras (2.0.6). This lets you apply a weight to unbalanced classes.
@url: https://gist.github.com/wassname/ce364fddfc8a025bfab4348cf5de852d
@author: wassname
"""
from keras import backend as K
def weighted_categorical_crossentropy(weights):
"""
A weighted version of keras.objectives.categorical_crossentropy
@nvgoldin
nvgoldin / asyncio_shutdown_loop.py
Created July 27, 2016 13:34
Python 3.5 asyncio - shutdown all tasks safely using signal handler
import signal
import functools
async def looping_task(loop, task_num):
try:
while True:
print('{0}:in looping_task'.format(task_num))
await asyncio.sleep(5.0, loop=loop)
except asyncio.CancelledError:
return "{0}: I was cancelled!".format(task_num)