Code for recreating the results in our ICML 2023 paper.

1. Paper
2. OpenReview Paper
3. Arxiv Paper
4. ResearchGate paper
5. CSP Website

Please visit CSP Website for more information.

• Python 3.7+
• Torch 1.7.1+
• Other required packages are summarized in main/requirements.txt.

The main code are located in main folder

1. run-fmow-contsoftmax.sh do CSP-MC-BLD self-supervised pre-training and supervised trains our location encoder on fMoW datasets.
2. run-inat_2018-contsoftmax.sh do CSP-MC-BLD self-supervised pre-training and supervised trains our location encoder on iNat018 datasets.

1. Download the required datasets and metadata from our project website and put them in the ../geo_prior_data_csp/ directory. This contains features and predictions extracted from trained image classifiers along with the location metadata.
2. Update the paths in paths.py so they point to the correct locations on your system.
3. Make sure you have the package versions specified in requirements.txt. Model training and evaluation was performed with Python 3.7.

1. Pre-trained models are available to download from here.
2. model_dir/model_inat_2018/ contains:

• model_inat_2018_gridcell_0.0010_32_0.1000000_1_512_leakyrelu_UNSUPER-contsoftmax_0.000500_1.000_1_1.000_TMP20.0000_1.0000_1.0000.pth.tar is the pre-trained grid location encoder on all unlabeled iNat2018 training dataset.
• model_inat_2018_gridcell_0.0010_32_0.1000000_1_512_leakyrelu_contsoftmax_ratio0.050_0.000500_1.000_1_1.000_TMP20.0000_1.0000_1.0000.pth.tar is the fine-tuned grid location encoder on 5% iNat2018 training dataset.

3. model_dir/model_fmow/ contains:

• model_fmow_gridcell_0.0010_32_0.1000000_1_512_gelu_UNSUPER-contsoftmax_0.000050_1.000_1_0.100_TMP1.0000_1.0000_1.0000.pth.tar is the pre-trained grid location encoder on all unlabeled fMoW training dataset.
• model_fmow_gridcell_0.0010_32_0.1000000_1_512_gelu_contsoftmax_ratio0.050_0.000050_1.000_1_0.100_TMP1.0000_1.0000_1.0000.pth.tar is the fine-tuned grid location encoder on 5% fMoW training dataset.

If you find our work useful in your research please consider citing our ICML 2023 paper.

@inproceedings{mai2023csp,
  title={CSP: Self-Supervised Contrastive Spatial Pre-Training for Geospatial-Visual Representations},
  author={Mai, Gengchen and Lao, Ni and He, Yutong and Song, Jiaming and Ermon, Stefano},
  booktitle={International Conference on Machine Learning},
  year={2023},
  organization={PMLR}
}

If you use grid location encoder, please also cite our ICLR 2020 paper and our IJGIS 2022 paper:

@inproceedings{mai2020space2vec,
  title={Multi-Scale Representation Learning for Spatial Feature Distributions using Grid Cells},
  author={Mai, Gengchen and Janowicz, Krzysztof and Yan, Bo and Zhu, Rui and Cai, Ling and Lao, Ni},
  booktitle={International Conference on Learning Representations},
  year={2020},
  organization={openreview}
}

@article{mai2022review,
  title={A review of location encoding for GeoAI: methods and applications},
  author={Mai, Gengchen and Janowicz, Krzysztof and Hu, Yingjie and Gao, Song and Yan, Bo and Zhu, Rui and Cai, Ling and Lao, Ni},
  journal={International Journal of Geographical Information Science},
  volume={36},
  number={4},
  pages={639--673},
  year={2022},
  publisher={Taylor \& Francis}
}