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A PyTorch implementation of SimSiam based on CVPR 2021 paper "Exploring Simple Siamese Representation Learning"

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SimSiam

A PyTorch implementation of SimSiam based on CVPR 2021 paper Exploring Simple Siamese Representation Learning.

Network Architecture image from the paper

Requirements

conda install pytorch=1.7.1 torchvision cudatoolkit=10.2 -c pytorch
  • thop
pip install thop

Dataset

CIFAR10 dataset is used in this repo, the dataset will be downloaded into data directory by PyTorch automatically.

Usage

Train SimSiam

python main.py --batch_size 256 --epochs 1000 
optional arguments:
--feature_dim                 Feature dim for out vector [default value is 2048]
--k                           Top k most similar images used to predict the label [default value is 200]
--batch_size                  Number of images in each mini-batch [default value is 512]
--epochs                      Number of sweeps over the dataset to train [default value is 800]

Linear Evaluation

python linear.py --batch_size 512 --epochs 100 
optional arguments:
--model_path                  The pretrained model path [default value is 'results/2048_200_512_800_model.pth']
--batch_size                  Number of images in each mini-batch [default value is 256]
--epochs                      Number of sweeps over the dataset to train [default value is 90]

Results

The model is trained on one NVIDIA GeForce TITAN X(12G) GPU.

Evaluation Protocol Params (M) FLOPs (M) Feature Dim Batch Size Epoch Num K Top1 Acc % Top5 Acc % Download
KNN 18.52 564.00 2048 512 800 200 88.1 99.1 model | f7yj
Linear 11.17 556.66 - 256 90 - 90.1 99.6 model | v8mf

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A PyTorch implementation of SimSiam based on CVPR 2021 paper "Exploring Simple Siamese Representation Learning"

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