Self-Supervised Learning

Features

self_supervised offers features like

• modular framework
• support for multi-gpu training using PyTorch Lightning
• easy to use and written in a PyTorch like style
• supports custom backbone models for self-supervised pre-training

Supported Models

• MoCo, 2019
• SimCLR, 2020
• SimSiam, 2021
• Barlow Twins, 2021
• BYOL, 2020
• NNCLR, 2021
• SwaV, 2020
• MocoV2, 2020
• MocoV3, 2021

Supported Loss Function

• NegativeCosineSimilarity
• SwaVLoss

Benchmarks

Currently implemented models and their accuracy on cifar10 and imagenette.

ImageNette

Model	Epochs	Batch Size	Test Accuracy
MoCo	800	256	0.827
SimCLR	800	256	0.847
SimSiam	800	256	0.827
BarlowTwins	800	256	0.801
BYOL	800	256	0.851

Cifar10

Model	Epochs	Batch Size	Test Accuracy
MoCo	200	128	0.83
SimCLR	200	128	0.78
SimSiam	200	128	0.73
BarlowTwins	200	128	0.84
BYOL	200	128	0.85
MoCo	200	512	0.85
SimCLR	200	512	0.83
SimSiam	200	512	0.81
BarlowTwins	200	512	0.78
BYOL	200	512	0.84
MoCo	800	128	0.89
SimCLR	800	128	0.87
SimSiam	800	128	0.80
MoCo	800	512	0.90
SimCLR	800	512	0.89
SimSiam	800	512	0.91

Tutorials

Want to jump to the tutorials and see lightly in action?

• Train MoCo on CIFAR-10
• Train SimCLR on clothing data
• Train SimSiam on satellite images
• Use lightly with custom augmentations

Further Reading

Self-supervised Learning:

• A Simple Framework for Contrastive Learning of Visual Representations (2020)
• Momentum Contrast for Unsupervised Visual Representation Learning (2020)
• Unsupervised Learning of Visual Features by Contrasting Cluster Assignments (2020)
• What Should Not Be Contrastive in Contrastive Learning (2020)