Search Results for author: Harrison Zhu

Found 6 papers, 4 papers with code

Markovian Gaussian Process Variational Autoencoders

no code implementations12 Jul 2022 Harrison Zhu, Carles Balsells Rodas, Yingzhen Li

Sequential VAEs have been successfully considered for many high-dimensional time series modelling problems, with many variant models relying on discrete-time mechanisms such as recurrent neural networks (RNNs).

Time Series Time Series Analysis

Convolutional Neural Processes for Inpainting Satellite Images

no code implementations24 May 2022 Alexander Pondaven, Märt Bakler, Donghu Guo, Hamzah Hashim, Martin Ignatov, Harrison Zhu

We show ConvNPs can outperform classical methods and state-of-the-art deep learning inpainting models on a scanline inpainting problem for LANDSAT 7 satellite images, assessed on a variety of in and out-of-distribution images.

Image Inpainting Imputation +1

Grassmann Stein Variational Gradient Descent

1 code implementation7 Feb 2022 Xing Liu, Harrison Zhu, Jean-François Ton, George Wynne, Andrew Duncan

Stein variational gradient descent (SVGD) is a deterministic particle inference algorithm that provides an efficient alternative to Markov chain Monte Carlo.

Dimensionality Reduction

Bayesian Probabilistic Numerical Integration with Tree-Based Models

1 code implementation NeurIPS 2020 Harrison Zhu, Xing Liu, Ruya Kang, Zhichao Shen, Seth Flaxman, François-Xavier Briol

The advantages and disadvantages of this new methodology are highlighted on a set of benchmark tests including the Genz functions, and on a Bayesian survey design problem.

Numerical Integration

$π$VAE: a stochastic process prior for Bayesian deep learning with MCMC

2 code implementations17 Feb 2020 Swapnil Mishra, Seth Flaxman, Tresnia Berah, Harrison Zhu, Mikko Pakkanen, Samir Bhatt

We show that our framework can accurately learn expressive function classes such as Gaussian processes, but also properties of functions to enable statistical inference (such as the integral of a log Gaussian process).

Computational Efficiency Gaussian Processes +2

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