This repository contains the PyTorch code for the NeurIPS 2019 paper "Hyperspherical Prototype Networks".
The paper is available here: https://arxiv.org/abs/1901.10514
The repository includes:
- Download link for pre-computed prototypes.
- Classification scripts for CIFAR-100, ImageNet-200, and CUB Birds.
- Script to construct your own prototypes.
- Joint classification and regression script for OmniArt.
To obtain prototypes pre-computed for the paper, perform the following steps:
cd prototypes/
wget -r -nH --cut-dirs=3 --no-parent --reject="index.html*" http://isis-data.science.uva.nl/mettes/hpn/prototypes/
cd ..
The folder 'sgd' denotes the prototypes without semantic priors, 'sgd-sem' with semantic priors. The folders 'sem' and 'simplex' denote the baseline prototypes of Table 1.
To create your own prototypes, use the prototypes.py script. An example run for 100 classes and 50 dimensions:
python prototypes.py -c 100 -d 50 -r prototypes/sgd/
In case you want to construct prototypes on CIFAR-100 or ImageNet-200 with word2vec representations, please download the wtv files as follows:
mkdir -p wtv
cd wtv/
wget -r -nH --cut-dirs=3 --no-parent --reject="index.html*" http://isis-data.science.uva.nl/mettes/hpn/wtv/
cd ..
To perform classification and joint optimization with Hyperspherical Prototype Networks, use the scripts that start with 'hpn_'.
For CIFAR-100 using 50-dimensional prototypes without semantic priors (akin to column 4 of Table 1 of the paper), run the following:
python hpn_cifar.py --datadir data/ --resdir res/ --hpnfile prototypes/sgd/prototypes-50d-100c.npy --seed 100
All the other scripts work precisely the same.
The CUB Birds dataset can be obtained from the original dataset: http://www.vision.caltech.edu/visipedia/CUB-200-2011.html
The prepared ImageNet-200 and OmniArt datasets can be obtained as follows:
cd data/
wget -r -nH --cut-dirs=3 --no-parent --reject="index.html*" http://isis-data.science.uva.nl/mettes/hpn/data/imagenet200/
wget -r -nH --cut-dirs=3 --no-parent --reject="index.html*" http://isis-data.science.uva.nl/mettes/hpn/data/omniart/
cd ..
Please cite the paper accordingly:
@inproceedings{mettes2019hyperspherical,
title={Hyperspherical Prototype Networks},
author={Mettes, Pascal and van der Pol, Elise and Snoek, Cees G M},
booktitle={Advances in Neural Information Processing Systems},
year={2019}
}
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