This repository contains the code needed to reproduce the experiments from the paper:

Funnels: Exact maximum likelihood with dimensionality reduction.

The base container for this project was pulled from the docker registry with the tag pytorch/pytorch:1.9.0-cuda11.1-cudnn8-runtime. See docker/requirements.txt for the necessary pip packages to be installed into the container.

The environment variable REPOROOT must be set to point to the top level of the repository. Once the container has been built or pulled run the following:

chmod +x run_setup.sh
./run_setup.sh 

and everything should run. All experiments ran this container using singularity 3.4.0.

The preprocessed datasets for MAF experiments was used for the density estimation comparisons.

Run experiments/plane_data_generation.py.

Run experiments/uci.py.

All image experiments have the args saved in json and are launched using experiments/image_generation.py, with cifar-10 and imagenet funnel experiments run with --model 'funnel_conv'.

The Inception and FID scores were calculated using external libraries as described in the directories under external/.

For the anomaly detection experiments the defaults can be found in experiments/image_configs/AD_config.json. With these defaults set across experiments the different models can be run as follows:

VAE

python image_generation.py --model 'VAE' --latent_size 4
python image_generation.py --model 'VAE' --latent_size 16

F-NSF

python image_generation.py --model 'funnel_conv_deeper' --latent_size 4
python image_generation.py --model 'funnel_conv_deeper' --latent_size 16

F-MLP

python image_generation.py --model 'funnelMLP' --levels 4
python image_generation.py --model 'funnelMLP' --levels 3

NSF

python image_generation.py --model 'glow'