Search Results for author: Sara Wade

Found 9 papers, 1 papers with code

Shared Differential Clustering across Single-cell RNA Sequencing Datasets with the Hierarchical Dirichlet Process

no code implementations5 Dec 2022 Jinlu Liu, Sara Wade, Natalia Bochkina

Single-cell RNA sequencing (scRNA-seq) is powerful technology that allows researchers to understand gene expression patterns at the single-cell level.

Clustering Imputation

Leveraging variational autoencoders for multiple data imputation

1 code implementation30 Sep 2022 Breeshey Roskams-Hieter, Jude Wells, Sara Wade

In this work, we investigate the ability of deep models, namely variational autoencoders (VAEs), to account for uncertainty in missing data through multiple imputation strategies.

Imputation

Mixtures of Gaussian Process Experts with SMC$^2$

no code implementations26 Aug 2022 Teemu Härkönen, Sara Wade, Kody Law, Lassi Roininen

Gaussian processes are a key component of many flexible statistical and machine learning models.

Gaussian Processes

Machine learning in the social and health sciences

no code implementations20 Jun 2021 Anja K. Leist, Matthias Klee, Jung Hyun Kim, David H. Rehkopf, Stéphane P. A. Bordas, Graciela Muniz-Terrera, Sara Wade

The uptake of machine learning (ML) approaches in the social and health sciences has been rather slow, and research using ML for social and health research questions remains fragmented.

BIG-bench Machine Learning Causal Inference

On MCMC for variationally sparse Gaussian processes: A pseudo-marginal approach

no code implementations4 Mar 2021 Karla Monterrubio-Gómez, Sara Wade

In complex models, the advantages of the PM scheme are particularly evident, and we demonstrate this on a two-level GP regression model with a nonparametric covariance function to capture non-stationarity.

Gaussian Processes

Fast Deep Mixtures of Gaussian Process Experts

no code implementations11 Jun 2020 Clement Etienam, Kody Law, Sara Wade, Vitaly Zankin

Mixtures of experts have become an indispensable tool for flexible modelling in a supervised learning context, allowing not only the mean function but the entire density of the output to change with the inputs.

Gaussian Processes Uncertainty Quantification

Enriched Mixtures of Gaussian Process Experts

no code implementations30 May 2019 Charles W. L. Gadd, Sara Wade, Alexis Boukouvalas

Mixtures of experts probabilistically divide the input space into regions, where the assumptions of each expert, or conditional model, need only hold locally.

Posterior Inference for Sparse Hierarchical Non-stationary Models

no code implementations4 Apr 2018 Karla Monterrubio-Gómez, Lassi Roininen, Sara Wade, Theo Damoulas, Mark Girolami

Gaussian processes are valuable tools for non-parametric modelling, where typically an assumption of stationarity is employed.

Computation

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