Search Results for author: Muhammad Ammar Malik

Found 3 papers, 1 papers with code

rfPhen2Gen: A machine learning based association study of brain imaging phenotypes to genotypes

no code implementations31 Mar 2022 Muhammad Ammar Malik, Alexander S. Lundervold, Tom Michoel

Moreover, random forests identified additional SNPs that were not prioritized by the linear models but are known to be associated with brain-related disorders.

BIG-bench Machine Learning feature selection +2

High-dimensional multi-trait GWAS by reverse prediction of genotypes

no code implementations29 Oct 2021 Muhammad Ammar Malik, Adriaan-Alexander Ludl, Tom Michoel

Multi-trait genome-wide association studies (GWAS) use multi-variate statistical methods to identify associations between genetic variants and multiple correlated traits simultaneously, and have higher statistical power than independent univariate analyses of traits.

regression Vocal Bursts Intensity Prediction

Restricted maximum-likelihood method for learning latent variance components in gene expression data with known and unknown confounders

1 code implementation6 May 2020 Muhammad Ammar Malik, Tom Michoel

Based on this result we propose a restricted maximum-likelihood method which estimates the latent variables by maximizing the likelihood on the restricted subspace orthogonal to the known confounding factors, and show that this reduces to probabilistic PCA on that subspace.

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