PhyllisPeng04
PhyllisPeng04
/ keras_weighted_categorical_crossentropy.py
Created
June 11, 2018 00:46
— forked from wassname/keras_weighted_categorical_crossentropy.py
Keras weighted categorical_crossentropy
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| """ | |
| 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 | |
PhyllisPeng04
/ tensorflow_finetune.py
Created
December 4, 2017 08:25
— forked from omoindrot/tensorflow_finetune.py
Example TensorFlow script for fine-tuning a VGG model (uses tf.contrib.data)
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| """ | |
| Example TensorFlow script for finetuning a VGG model on your own data. | |
| Uses tf.contrib.data module which is in release v1.2 | |
| Based on PyTorch example from Justin Johnson | |
| (https://gist.github.com/jcjohnson/6e41e8512c17eae5da50aebef3378a4c) | |
| Required packages: tensorflow (v1.2) | |
| Download the weights trained on ImageNet for VGG: | |
| ``` | |
| wget http://download.tensorflow.org/models/vgg_16_2016_08_28.tar.gz |