When are Iterative GPs Numerically Accurate?

Overview

When are Iterative GPs Numerically Accurate?

This is a code repository for the paper "When are Iterative GPs Numerically Accurate?" by Wesley Maddox, Sanyam Kapoor, and Andrew Gordon Wilson.

Citation

@article{maddox2021iterative,
      title={When are Iterative Gaussian Processes Reliably Accurate?}, 
      author={Wesley J. Maddox and Sanyam Kapoor and Andrew Gordon Wilson},
      year={2021},
      publication={ICML OPTML Workshop},
      url={https://arxiv.org/abs/2112.15246},
}

Models

Our models, both iterative and cholesky-based, are in the models/gpytorch/models.py.

The scripts that can be used to reproduce our results are:

  • models/gpytorch/runner.py
  • notebooks/iterative_gps_reliability.ipynb (explainer)
  • src/train_keops.py (for optimization trajectories)

Repository References

The benchmarking library that we cloned is Hugh Salimbeni's bayesian_benchmarks library, available at https://github.com/hughsalimbeni/bayesian_benchmarks.

For full comparison to other libraries that use the same library, we use standardization over both the train/test splits.

For LBFGS, we used (and link to) Michael Shi's LBFGS library, available at https://github.com/hjmshi/PyTorch-LBFGS/.

Owner
Wesley Maddox
PhD student at New York University.
Wesley Maddox
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