Contrastive Mean-Shift Learning for Generalized Category Discovery

Sua Choi    Dahyun Kang    Minsu Cho

Pohang University of Science and Technology (POSTECH)

[Paper] [Project page]

Environmnet installation

This project is built upon the following environment:

• Python 3.10
• CUDA 11.7
• PyTorch 1.13.1

The package requirements can be installed via requirements.txt,

pip install -r requirements.txt

Datasets

We use fine-grained benchmarks in this paper, including:

• The Semantic Shift Benchmark (SSB) and Herbarium19

We also use generic object recognition datasets, including:

• CIFAR100 and ImageNet

Please follow this repo to set up the data.

Download the datasets, ssb splits, and pretrained backbone by following the file structure below and set DATASET_ROOT={YOUR DIRECTORY} in config.py.

    DATASET_ROOT/
    ├── cifar100/
    │   ├── cifar-100-python\
    │   │   ├── meta/
    │       ├── ...
    ├── CUB_200_2011/
    │   ├── attributes/
    │   ├── ...
    ├── ...

    CMS/
    ├── data/
    │   ├── ssb_splits/
    ├── models/
    │   ├── dino_vitbase16_pretrain.pth
    ├── ...

Training

bash bash_scripts/contrastive_meanshift_training.sh

Example bash commands for training are as follows:

# GCD
python -m methods.contrastive_meanshift_training  \
            --dataset_name 'cub' \
            --lr 0.05 \
            --temperature 0.25 \
            --wandb 

# Inductive GCD
python -m methods.contrastive_meanshift_training  \
            --dataset_name 'cub' \
            --lr 0.05 \
            --temperature 0.25 \
            --inductive \
            --wandb 

Evaluation

bash bash_scripts/meanshift_clustering.sh

Example bash command for evaluation is as follows. It will require changing model_name.

python -m methods.meanshift_clustering \
        --dataset_name 'cub' \
        --model_name 'cub_best' \

Results and checkpoints

Experimental results on GCD task.

	All	Old	Novel	Checkpoints
CIFAR100	82.3	85.7	75.5	link
ImageNet100	84.7	95.6	79.2	link
CUB	68.2	76.5	64.0	link
Stanford Cars	56.9	76.1	47.6	link
FGVC-Aircraft	56.0	63.4	52.3	link
Herbarium19	36.4	54.9	26.4	link

Experimental results on inductive GCD task.

	All	Old	Novel	Checkpoints
CIFAR100	80.7	84.4	65.9	link
ImageNet100	85.7	95.7	75.8	link
CUB	69.7	76.5	63.0	link
Stanford Cars	57.8	75.2	41.0	link
FGVC-Aircraft	53.3	62.7	43.8	link
Herbarium19	46.2	53.0	38.9	link

Citation

If you find our code or paper useful, please consider citing our paper:

  @inproceedings{choi2024contrastive,
    title={Contrastive Mean-Shift Learning for Generalized Category Discovery},
    author={Choi, Sua and Kang, Dahyun and Cho, Minsu},
    booktitle={Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition},
    year={2024}
  }

Related Repos

The codebase is largely built on Generalized Category Discovery and PromptCAL.

Acknowledgements

This work was supported by the NRF grant (NRF-2021R1A2C3012728 (50%)) and the IITP grants (2022-0-00113: Developing a Sustainable Collaborative Multi-modal Lifelong Learning Framework (45%), 2019-0-01906: AI Graduate School Program at POSTECH (5%)) funded by Ministry of Science and ICT, Korea.