Deep Generative Learning via Schrödinger Bridge

Official code for ICML 2021 paper Deep Generative Learning via Schrödinger Bridge, by Gefei Wang, Yuling Jiao, Qian Xu, Yang Wang and Can Yang.

Run Experiments

Training

For the CIFAR-10 dataset, to train both density ratio estimator and score estimator:

python main.py --config cifar10.yml --doc cifar10 --sigma_sq 1.0 --tau 2.0

To only train density ratio estimator:

python main.py --config cifar10.yml --doc cifar10 --sigma_sq 1.0 --tau 2.0 --train_d_only

To only train score estimator:

python main.py --config cifar10.yml --doc cifar10 --sigma_sq 1.0 --tau 2.0 --train_s_only

For the CelebA dataset, the config file is celeba.yml, and recommended hyperparameters are --sigma_sq 4.0 --tau 8.0.

Sampling

To sample 50,000 images for fid evaluation:

python main.py --config cifar10.yml --doc cifar10 --sample --fid

Development

This package is developed by Gefei Wang (gwangas@connect.ust.hk).

Contact Information

Please contact Gefei (gwangas@connect.ust.hk), Yuling (yulingjiaomath@whu.edu.cn) or Can (macyang@ust.hk) if any enquiry.

Reference and Acknowledgements

This implementation is based on https://github.com/ermongroup/ddim.

Citation

@InProceedings{pmlr-v139-wang21l,
  title = 	 {Deep Generative Learning via Schr{ö}dinger Bridge},
  author =       {Wang, Gefei and Jiao, Yuling and Xu, Qian and Wang, Yang and Yang, Can},
  booktitle = 	 {Proceedings of the 38th International Conference on Machine Learning},
  pages = 	 {10794--10804},
  year = 	 {2021},
  editor = 	 {Meila, Marina and Zhang, Tong},
  volume = 	 {139},
  series = 	 {Proceedings of Machine Learning Research},
  month = 	 {18--24 Jul},
  publisher =    {PMLR}
}