https://github.com/cyberzhg/keras-losses

Some loss functions in Keras
https://github.com/cyberzhg/keras-losses

coral-loss keras loss-functions ranking-loss

Last synced: 3 months ago
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Some loss functions in Keras

• Host: GitHub
• URL: https://github.com/cyberzhg/keras-losses
• Owner: CyberZHG
• License: mit
• Created: 2018-10-10T07:10:45.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2022-01-22T12:02:05.000Z (about 3 years ago)
• Last Synced: 2023-09-25T08:54:07.713Z (over 1 year ago)
• Topics: coral-loss, keras, loss-functions, ranking-loss
• Language: Python
• Homepage:
• Size: 10.7 KB
• Stars: 10
• Watchers: 5
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Keras Losses

Some loss functions in Keras.

## Install

```bash

python setup.py install

```

## Usage

### Ranking Loss

![](https://user-images.githubusercontent.com/853842/46719694-29ed0400-cca1-11e8-9be5-9bf298952d90.png)

```python

from keras_losses import get_ranking_loss

ranking_loss = get_ranking_loss(gamma=2.0, mp=2.5, mn=0.5)

```

### Weighted Categorical Cross-Entropy Loss

![](https://user-images.githubusercontent.com/853842/46720488-3eca9700-cca3-11e8-845d-b44adc31df74.png)

```python

from keras_losses import get_weighted_categorical_crossentropy, get_weighted_sparse_categorical_crossentropy

weighted_loss = get_weighted_categorical_crossentropy(weights=[0.8, 0.1, 0.2, 0.3, 0.4])

weighted_loss = get_weighted_sparse_categorical_crossentropy(weights=[0.8, 0.1, 0.2, 0.3, 0.4])

```

### CORAL Loss

![](https://user-images.githubusercontent.com/853842/108617122-c23d4b00-744e-11eb-86e8-ee95fc03421a.png)

![](https://user-images.githubusercontent.com/853842/108617126-c5383b80-744e-11eb-8aa0-e0f8acd69aa8.png)

![](https://user-images.githubusercontent.com/853842/108617127-c79a9580-744e-11eb-82e3-f99b3618dea3.png)

```python

from keras_losses import coral_loss

```