Code accompanying the paper Gaussian Process Prior Variational Autoencoder (GPPVAE) [1]. The implementation in this repository is in pytorch.

[1] Casale FP, Dalca AV, Saglietti L, Listgarten J, Fusi N. Gaussian Process Prior Variational Autoencoders, 32nd Conference on Neural Information Processing Systems, 2018, Montreal, Canada.

The dependencies can be installed using anaconda:

conda create -n gppvae python=3.6
source activate gppvae
conda install -y numpy scipy h5py matplotlib dask pandas
conda install -y pytorch=0.4.1 -c soumit
conda install -y torchvision=0.2.1

The face dataset is available at http://wiki.cnbc.cmu.edu/Face_Place. The data can be preprocessed as follows:

cd GPPVAE/pysrc/faceplace
python preprocess_data.py

Plots and weights are dumped in the specified output dir every pre-determined number of epochs, which can be specified using the argument epoch_cb.

python train_vae.py --outdir ./out/vae

For optimal performance, the autoencoder parameters of the GPPVAE model should be initialized to those of a pretrained VAE (see above). This can be done reusing the output of the run vae command. For example, if the vae results are contained in ./out/vae and one has trained VAE for 5000 epochs, then one can use:

python train_gppvae.py --outdir ./out/gppvae --vae_cfg ./out/vae/vae.cfg.p --vae_weights ./out/vae/weights.04999.pt

If you encounter any issue, please, report it.

This project is licensed under the Apache License (Version 2.0, January 2004) - see the LICENSE file for details

If you use any part of this code in your research, please cite our paper:

@article{casale2018gaussian,
  title={Gaussian Process Prior Variational Autoencoders},
  author={Casale, Francesco Paolo and Dalca, Adrian V and Saglietti, Luca and Listgarten, Jennifer and Fusi, Nicolo},
  journal={32nd Conference on Neural Information Processing Systems},
  year={2018}
}