Search Results for author: Chris McKennan

Found 4 papers, 2 papers with code

A statistical framework for GWAS of high dimensional phenotypes using summary statistics, with application to metabolite GWAS

no code implementations17 Mar 2023 Weiqiong Huang, Emily C. Hector, Joshua Cape, Chris McKennan

The recent explosion of genetic and high dimensional biobank and 'omic' data has provided researchers with the opportunity to investigate the shared genetic origin (pleiotropy) of hundreds to thousands of related phenotypes.

Bayesian Inference

A novel framework to quantify uncertainty in peptide-tandem mass spectrum matches with application to nanobody peptide identification

no code implementations15 Oct 2021 Chris McKennan, Zhe Sang, Yi Shi

To address these issues, we then develop a novel framework and method that treats peptide-spectrum matching as a Bayesian model selection problem with an incomplete model space, which are, to our knowledge, the first to account for all sources of PSM error without relying on the aforementioned assumptions.

Model Selection

Estimation and inference in metabolomics with non-random missing data and latent factors

1 code implementation5 Sep 2019 Chris McKennan, Carole Ober, Dan Nicolae

However, current methods to analyze these data can only account for the missing data or unobserved factors, but not both.

Methodology

Accounting for unobserved covariates with varying degrees of estimability in high dimensional biological data

1 code implementation3 Jan 2018 Chris McKennan, Dan Nicolae

Lastly, we use previously published DNA methylation data to show our method can more accurately estimate the direct effect of asthma on methylation than previously published methods, which underestimate the correlation between asthma and latent cell type heterogeneity.

Methodology

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