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https://github.com/StannisZhou/mixed_hmc
https://github.com/StannisZhou/mixed_hmc
Last synced: about 2 months ago
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- Host: GitHub
- URL: https://github.com/StannisZhou/mixed_hmc
- Owner: StannisZhou
- License: mit
- Created: 2020-02-21T04:09:06.000Z (over 4 years ago)
- Default Branch: master
- Last Pushed: 2022-02-13T20:53:40.000Z (over 2 years ago)
- Last Synced: 2024-07-04T02:13:22.950Z (3 months ago)
- Language: Python
- Size: 1.51 MB
- Stars: 12
- Watchers: 2
- Forks: 3
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Updates
See [Metropolis Augmented Hamiltonian Monte Carlo](https://arxiv.org/abs/2201.08044) for a simplified and more general formulation of mixed HMC with Laplace momentum.
An alternative implementation of mixed HMC is [available within the probabilistic programming language *NumPyro*](http://num.pyro.ai/en/latest/mcmc.html#numpyro.infer.mixed_hmc.MixedHMC).
# Introduction
This repo contains code for reproducing the results in the paper [**Mixed Hamiltonian Monte Carlo for Mixed Discrete and Continuous Variables**](https://arxiv.org/abs/1909.04852) at *Neural Information Processing Systems (NeurIPS) 2020*.
# Setting up the environment
1. [Install miniconda](https://docs.conda.io/projects/conda/en/latest/user-guide/install/) (if not already installed)
2. Set up the virtual environment
```
conda env create -f environment.yml
conda activate momentum
python setup.py develop
```
3. Follow instructions on https://github.com/slinderman/pypolyagamma to manually install *pypolyagamma* inside the virtual environment
# Reproducing the results
Use the scripts in the `scripts` folder to reproduce results in the paper.
# Erratum
The [version appeared at NeurIPS 2020](https://proceedings.neurips.cc/paper/2020/hash/c6a01432c8138d46ba39957a8250e027-Abstract.html) used an incorrect MH correction term, due to a mistake in the proof of a lemma in the supplementary. The [arXiv version of the paper](https://arxiv.org/abs/1909.04852) and the code in this repository have been fixed. See the [erratum](https://stanniszhou.github.io/papers/mixed_hmc_erratum.pdf) for more details.