Search Results for author: Martin Jankowiak

Found 20 papers, 9 papers with code

Reparameterized Variational Rejection Sampling

no code implementations26 Sep 2023 Martin Jankowiak, Du Phan

To expand the space of flexible variational families, we revisit Variational Rejection Sampling (VRS) [Grover et al., 2018], which combines a parametric proposal distribution with rejection sampling to define a rich non-parametric family of distributions that explicitly utilizes the known target distribution.

Variational Inference

Bayesian Variable Selection in a Million Dimensions

2 code implementations2 Aug 2022 Martin Jankowiak

Bayesian variable selection is a powerful tool for data analysis, as it offers a principled method for variable selection that accounts for prior information and uncertainty.

regression Variable Selection

Surrogate Likelihoods for Variational Annealed Importance Sampling

no code implementations22 Dec 2021 Martin Jankowiak, Du Phan

Variational inference is a powerful paradigm for approximate Bayesian inference with a number of appealing properties, including support for model learning and data subsampling.

Probabilistic Programming Variational Inference

Fast Bayesian Variable Selection in Binomial and Negative Binomial Regression

1 code implementation28 Jun 2021 Martin Jankowiak

Bayesian variable selection is a powerful tool for data analysis, as it offers a principled method for variable selection that accounts for prior information and uncertainty.

regression Variable Selection

Scalable Cross Validation Losses for Gaussian Process Models

no code implementations24 May 2021 Martin Jankowiak, Geoff Pleiss

We introduce a simple and scalable method for training Gaussian process (GP) models that exploits cross-validation and nearest neighbor truncation.

Classification Multi-class Classification +2

High-Dimensional Bayesian Optimization with Sparse Axis-Aligned Subspaces

2 code implementations27 Feb 2021 David Eriksson, Martin Jankowiak

Bayesian optimization (BO) is a powerful paradigm for efficient optimization of black-box objective functions.

Bayesian Optimization Vocal Bursts Intensity Prediction

Fast Matrix Square Roots with Applications to Gaussian Processes and Bayesian Optimization

1 code implementation NeurIPS 2020 Geoff Pleiss, Martin Jankowiak, David Eriksson, Anil Damle, Jacob R. Gardner

Matrix square roots and their inverses arise frequently in machine learning, e. g., when sampling from high-dimensional Gaussians $\mathcal{N}(\mathbf 0, \mathbf K)$ or whitening a vector $\mathbf b$ against covariance matrix $\mathbf K$.

Bayesian Optimization Gaussian Processes

Deep Sigma Point Processes

no code implementations21 Feb 2020 Martin Jankowiak, Geoff Pleiss, Jacob R. Gardner

We introduce Deep Sigma Point Processes, a class of parametric models inspired by the compositional structure of Deep Gaussian Processes (DGPs).

Gaussian Processes Point Processes +1

Composable Effects for Flexible and Accelerated Probabilistic Programming in NumPyro

3 code implementations24 Dec 2019 Du Phan, Neeraj Pradhan, Martin Jankowiak

NumPyro is a lightweight library that provides an alternate NumPy backend to the Pyro probabilistic programming language with the same modeling interface, language primitives and effect handling abstractions.

Probabilistic Programming

Functional Tensors for Probabilistic Programming

1 code implementation23 Oct 2019 Fritz Obermeyer, Eli Bingham, Martin Jankowiak, Du Phan, Jonathan P. Chen

It is a significant challenge to design probabilistic programming systems that can accommodate a wide variety of inference strategies within a unified framework.

Probabilistic Programming

Parametric Gaussian Process Regressors

no code implementations ICML 2020 Martin Jankowiak, Geoff Pleiss, Jacob R. Gardner

In an extensive empirical comparison with a number of alternative methods for scalable GP regression, we find that the resulting predictive distributions exhibit significantly better calibrated uncertainties and higher log likelihoods--often by as much as half a nat per datapoint.

regression Variational Inference

Neural Likelihoods for Multi-Output Gaussian Processes

no code implementations31 May 2019 Martin Jankowiak, Jacob Gardner

We construct flexible likelihoods for multi-output Gaussian process models that leverage neural networks as components.

Gaussian Processes Variational Inference

Tensor Variable Elimination for Plated Factor Graphs

no code implementations8 Feb 2019 Fritz Obermeyer, Eli Bingham, Martin Jankowiak, Justin Chiu, Neeraj Pradhan, Alexander Rush, Noah Goodman

To exploit efficient tensor algebra in graphs with plates of variables, we generalize undirected factor graphs to plated factor graphs and variable elimination to a tensor variable elimination algorithm that operates directly on plated factor graphs.

Music Modeling Probabilistic Programming +1

Closed Form Variational Objectives For Bayesian Neural Networks with a Single Hidden Layer

no code implementations2 Nov 2018 Martin Jankowiak

In this note we consider setups in which variational objectives for Bayesian neural networks can be computed in closed form.

General Classification

Pathwise Derivatives Beyond the Reparameterization Trick

no code implementations ICML 2018 Martin Jankowiak, Fritz Obermeyer

We observe that gradients computed via the reparameterization trick are in direct correspondence with solutions of the transport equation in the formalism of optimal transport.

regression Variational Inference

Pathwise Derivatives for Multivariate Distributions

no code implementations5 Jun 2018 Martin Jankowiak, Theofanis Karaletsos

We exploit the link between the transport equation and derivatives of expectations to construct efficient pathwise gradient estimators for multivariate distributions.

Variational Inference

Event Extraction Using Distant Supervision

no code implementations LREC 2014 Kevin Reschke, Martin Jankowiak, Mihai Surdeanu, Christopher Manning, Daniel Jurafsky

We present a new publicly available dataset and event extraction task in the plane crash domain based on Wikipedia infoboxes and newswire text.

Event Extraction Knowledge Base Population +2

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