Rethinking Nearest Neighbors for Visual Classification

Overview

Rethinking Nearest Neighbors for Visual Classification

arXiv

Environment settings

Check out scripts/env_setup.sh

Setup data

Download the following fine-grained datasets and ImageNet.

In current version, you need to modify each data file under knn/data/finetune/*.py

Experiments

The numerical experiment results with corresponding hyper-parameters can be found here:

To use the code in this repo, here are some key configs:

  • DATA.FEATURE: specify which representation to use. FEATURES.md includes more details
  • DATA.BATCH_SIZE: ViT-based backbone requires a smaller batchsize
  • RUN_N_TIMES: ensure only run once in case duplicated submision
  • MODEL.TYPE: base or joint training
  • OUTPUT_DIR: output dir of the final model and logs
  • SOLVER.BASE_LR: learning rate for the experiment
  • SOLVER.WEIGHT_DECAY: weight decay value for the experiment
  • MODEL.KNN_LAMBDA: alpha in Eq 4

Linear evaluation

See script/run_linear.sh and script/run_newt.sh

End-to-end finetuning

See script/run_finetune.sh

License

This repo are released under the CC-BY-NC 4.0 license. See LICENSE for additional details.

Acknowledgement

We thank the researchers who propose NEWT for providing the features for the datasets.

Owner
Menglin Jia
K-Mn-P: "jia meng lin" (mandarin pronunciation of those chemical elements)
Menglin Jia
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