Implementation of SwinTransformerV2 in TensorFlow.

Overview

SwinTransformerV2-TensorFlow

A TensorFlow implementation of SwinTransformerV2 by Microsoft Research Asia, based on their official implementation of SwinTransformerV1 and their paper on V2.

Paper on Version 2 (18/11/2021): [arXiv]

Paper on Version 1 (17/08/2021): [arXiv]

Features:

  • TensorFlow 2 implementation of version 1 and 2 of the SwinTransformer, a state-of-the-art backbone for many contemporaty tasks in computer vision. A brief overview of the architectural changes made in version 2:

Changes in Version 2

  • A pre-norm configuration replaces the previous post-norm configuration, meant to improve training stability in larger models.
  • A scaled cosine attention replaces the dot product attention in V1, with a learnable scaler.
  • A continuous log-spaced relative position bias is used instead of the previous parametric table approach. This is implemented here as a small MLP network and a log transform on the relative coordinates bias.

Requirements:

  • numpy==1.21.4
  • tensorflow==2.7.0
  • tensorflow_addons==0.15.0

Getting started

Currently writing up.

License

This project is licensed under the MIT license.

Citation

@article{liu2021Swin,
  title={Swin Transformer: Hierarchical Vision Transformer using Shifted Windows},
  author={Liu, Ze and Lin, Yutong and Cao, Yue and Hu, Han and Wei, Yixuan and Zhang, Zheng and Lin, Stephen and Guo, Baining},
  journal={arXiv preprint arXiv:2103.14030},
  year={2021}
}
Owner
Phan Nguyen
Phan Nguyen
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