News

1. We are reorganizing codes and rerunning experiments to make sure the reproducibility of the results. So please pay attention to our updates.
2. If you want to join TorchSSL team, please e-mail Yidong Wang ([email protected]; [email protected]) for more information. We plan to add more SSL algorithms and expand TorchSSL from CV to NLP and Speech.

TorchSSL: A PyTorch-based Toolbox for Semi-Supervised Learning

An all-in-one toolkit based on PyTorch for semi-supervised learning (SSL). We implmented 9 popular SSL algorithms to enable fair comparison and boost the development of SSL algorithms.

FlexMatch: Boosting Semi-Supervised Learning with Curriculum Pseudo Labeling(https://arxiv.org/abs/2110.08263)

Supported algorithms

We support fully supervised training + 9 popular SSL algorithms as listed below:

1. Pi-Model [1]
2. MeanTeacher [2]
3. Pseudo-Label [3]
4. VAT [4]
5. MixMatch [5]
6. UDA [6]
7. ReMixMatch [7]
8. FixMatch [8]
9. FlexMatch [9]

Besides, we implement our Curriculum Pseudo Labeling (CPL) method for Pseudo-Label (Flex-Pseudo-Label) and UDA (Flex-UDA).

Supported datasets

We support 5 popular datasets in SSL research as listed below:

1. CIFAR-10
2. CIFAR-100
3. STL-10
4. SVHN
5. ImageNet

Installation

1. Prepare conda
2. Run conda env create -f environment.yml

Usage

It is convenient to perform experiment with TorchSSL. For example, if you want to perform FlexMatch algorithm:

1. Modify the config file in config/flexmatch/flexmatch.yaml as you need
2. Run python flexmatch.py --c config/flexmatch/flexmatch.yaml

Customization

If you want to write your own algorithm, please follow the following steps:

1. Create a directory for your algorithm, e.g., SSL, write your own model file SSl/SSL.py in it.
2. Write the training file in SSL.py
3. Write the config file in config/SSL/SSL.yaml

Results

Citation

If you think this toolkit or the results are helpful to you and your research, please cite our paper:

@article{zhang2021flexmatch},
  title={FlexMatch: Boosting Semi-supervised Learning with Curriculum Pseudo Labeling},
  author={Zhang, Bowen and Wang, Yidong and Hou, Wenxin and Wu, Hao and Wang, Jindong and Okumura, Manabu and Shinozaki, Takahiro},
  booktitle={Neural Information Processing Systems (NeurIPS)},
  year={2021}
}

Maintainer

Yidong Wang¹, Hao Wu², Bowen Zhang¹, Wenxin Hou^1,3, Yuhao Chen⁴ Jindong Wang³

Shinozaki Lab¹ http://www.ts.ip.titech.ac.jp/

Okumura Lab² http://lr-www.pi.titech.ac.jp/wp/

Microsoft Research Asia³

Megvii⁴

References

[1] Antti Rasmus, Harri Valpola, Mikko Honkala, Mathias Berglund, and Tapani Raiko. Semi-supervised learning with ladder networks. InNeurIPS, pages 3546–3554, 2015.

[2] Antti Tarvainen and Harri Valpola. Mean teachers are better role models: Weight-averagedconsistency targets improve semi-supervised deep learning results. InNeurIPS, pages 1195–1204, 2017.

[3] Dong-Hyun Lee et al. Pseudo-label: The simple and efficient semi-supervised learning methodfor deep neural networks. InWorkshop on challenges in representation learning, ICML,volume 3, 2013.

[4] Takeru Miyato, Shin-ichi Maeda, Masanori Koyama, and Shin Ishii. Virtual adversarial training:a regularization method for supervised and semi-supervised learning.IEEE TPAMI, 41(8):1979–1993, 2018.

[5] David Berthelot, Nicholas Carlini, Ian Goodfellow, Nicolas Papernot, Avital Oliver, and ColinRaffel. Mixmatch: A holistic approach to semi-supervised learning.NeurIPS, page 5050–5060,2019.

[6] Qizhe Xie, Zihang Dai, Eduard Hovy, Thang Luong, and Quoc Le. Unsupervised data augmen-tation for consistency training.NeurIPS, 33, 2020.

[7] David Berthelot, Nicholas Carlini, Ekin D Cubuk, Alex Kurakin, Kihyuk Sohn, Han Zhang,and Colin Raffel. Remixmatch: Semi-supervised learning with distribution matching andaugmentation anchoring. InICLR, 2019.

[8] Kihyuk Sohn, David Berthelot, Nicholas Carlini, Zizhao Zhang, Han Zhang, Colin A Raf-fel, Ekin Dogus Cubuk, Alexey Kurakin, and Chun-Liang Li. Fixmatch: Simplifying semi-supervised learning with consistency and confidence.NeurIPS, 33, 2020.

[9] Bowen Zhang, Yidong Wang, Wenxin Hou, Hao wu, Jindong Wang, Okumura Manabu, and Shinozaki Takahiro. FlexMatch: Boosting Semi-Supervised Learning with Curriculum Pseudo Labeling. NeurIPS, 2021.