What is VISSL?

VISSL is a computer VIsion library for state-of-the-art Self-Supervised Learning research with PyTorch. VISSL aims to accelerate research cycle in self-supervised learning: from designing a new self-supervised task to evaluating the learned representations. Key features include:

• Reproducible implementation of SOTA in Self-Supervision: All existing SOTA in Self-Supervision are implemented - SwAV, SimCLR, MoCo(v2), PIRL, NPID, NPID++, DeepClusterV2, ClusterFit, RotNet, Jigsaw. Also supports supervised trainings.

• Benchmark suite: Variety of benchmarks tasks including linear image classification (places205, imagenet1k, voc07, inaturalist), full finetuning, semi-supervised benchmark, nearest neighbor benchmark, object detection (Pascal VOC and COCO).

• Ease of Usability: easy to use using yaml configuration system based on Hydra.

• Modular: Easy to design new tasks and reuse the existing components from other tasks (objective functions, model trunk and heads, data transforms, etc.). The modular components are simple drop-in replacements in yaml config files.

• Scalability: Easy to train model on 1-gpu, multi-gpu and multi-node. Several components for large scale trainings provided as simple config file plugs: Activation checkpointing, ZeRO, FP16, LARC, Stateful data sampler, data class to handle invalid images, large model backbones like RegNets, etc.

• Model Zoo: Over 60 pre-trained self-supervised model weights.

We hope that VISSL will democratize self-supervised learning and accelerate advancements in self-supervised learning. We also hope that it will enable research in some important research directions like Generalizability of models etc.

Hope you enjoy using VISSL!