https://github.com/raphaelsenn/cgan

PyTorch reimplementation of "Conditional Generative Adversarial Nets" (Mirza and Osindero, 2014).
https://github.com/raphaelsenn/cgan

Last synced: 9 months ago
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PyTorch reimplementation of "Conditional Generative Adversarial Nets" (Mirza and Osindero, 2014).

• Host: GitHub
• URL: https://github.com/raphaelsenn/cgan
• Owner: raphaelsenn
• License: mit
• Created: 2025-09-17T07:47:59.000Z (9 months ago)
• Default Branch: main
• Last Pushed: 2025-09-17T09:49:09.000Z (9 months ago)
• Last Synced: 2025-09-17T10:31:38.391Z (9 months ago)
• Language: Python
• Size: 402 KB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# Conditional Generative Adversarial Networks (Goodfellow et al., 2014)

This code implements the fully connected generator and discriminator for the MNIST dataset as described in Mirza and Osindero (2014), ["Conditional Generative Adversarial Networks"](https://arxiv.org/abs/1406.2661).

![gan_objective](./assets/gan_objective.png)

*Equation 1: The original GAN objective, where G denotes the generator and D the discriminator (Goodfellow et al., 2014).*

![cgan_objective](./assets/cgan_objective.png)

*Equation 2: The CGAN objective, where G denotes the generator and D the discriminator (Mirza and Osindero, 2014).*

![cgan_architecture](./assets/cgan_architecture.png)

*Figure 1: Illustrating the CGAN structure (Mirza and Osindero, 2014).*

## MNIST (fully-connected model)

#### Model Architecture:

Generator:

* Architecture in `./src/cgan_fc.py`

* Learnable parameters: 2413984

Discriminator:

* Architecture in `./src/cgan_fc.py`

* Learnable parameters: 1224351

#### Hyperparameters/Settings:

* Epochs: 100  

* Batch size: 128

* Objective: Binary Cross-Entropy Loss with Logits

* Generator optimizer: Adam

* Discriminator optimizer: Adam

* Generator learning rate: 0.0002  

* Discriminator learning rate: 0.0002  

* Generator betas: (0.5, 0.999)  

* Discriminator betas: (0.5, 0.999)  

#### Training Data:

![MNIST_Training_Data](./assets/mnist_train.png)

#### GAN Training Losses:

![MNIST_Loss](./assets/mnist_loss.png)

#### Fake Data:

![MNIST_Fake_Data](./assets/mnist_fake.png)

## Citations

```bibtex

@misc{mirza2014conditionalgenerativeadversarialnets,

      title={Conditional Generative Adversarial Nets}, 

      author={Mehdi Mirza and Simon Osindero},

      year={2014},

      eprint={1411.1784},

      archivePrefix={arXiv},

      primaryClass={cs.LG},

      url={https://arxiv.org/abs/1411.1784}, 

}

```

```bibtex

@misc{goodfellow2014generativeadversarialnetworks,

      title={Generative Adversarial Networks}, 

      author={Ian J. Goodfellow and Jean Pouget-Abadie and Mehdi Mirza and Bing Xu and David Warde-Farley and Sherjil Ozair and Aaron Courville and Yoshua Bengio},

      year={2014},

      eprint={1406.2661},

      archivePrefix={arXiv},

      primaryClass={stat.ML},

      url={https://arxiv.org/abs/1406.2661}, 

}

```

```bibtex

@misc{goodfellow2013maxoutnetworks,

      title={Maxout Networks}, 

      author={Ian J. Goodfellow and David Warde-Farley and Mehdi Mirza and Aaron Courville and Yoshua Bengio},

      year={2013},

      eprint={1302.4389},

      archivePrefix={arXiv},

      primaryClass={stat.ML},

      url={https://arxiv.org/abs/1302.4389}, 

}

```