Prototypical Networks for Few-shot Learning

Code for the NIPS 2017 paper Prototypical Networks for Few-shot Learning.

If you use this code, please cite our paper:

@inproceedings{snell2017prototypical,
  title={Prototypical Networks for Few-shot Learning},
  author={Snell, Jake and Swersky, Kevin and Zemel, Richard},
  booktitle={Advances in Neural Information Processing Systems},
  year={2017}
 }

Training a prototypical network

Install dependencies

• This code has been tested on Ubuntu 16.04 with Python 2.7 and 3.5. If you're using conda, you can create a Python environment by running conda create -n protonets python=2.7 or conda create -n protonets python=3.5 and then activate it by running source activate protonets.
• Install PyTorch and torchvision.
• Install torchnet by running pip install git+https://github.com/pytorch/tnt.git@master.
• Install the protonets package by running python setup.py install or python setup.py develop.

Set up the Omniglot dataset

• Run sh download_omniglot.sh.

Train the model

• Run python scripts/train/few_shot/run_train.py. This will run training and place the results into results.
  • You can specify a different output directory by passing in the option --log.exp_dir EXP_DIR, where EXPD_DIR is your desired output directory.
  • If you are running on a GPU you can pass in the option --data.cuda.
• Re-run in trainval mode python scripts/train/few_shot/run_trainval.py. This will save your model into results/trainval by default.

Evaluate

• Run evaluation as: python scripts/predict/few_shot/run_eval.py --model.model_path results/trainval/best_model.t7.