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In genome-wide association studies (GWAS), hundreds of thousands of genetic markers (SNPs) are tested for association with a trait or phenotype. Reported effects tend to be larger in magnitude than the true effects of these markers, the…

统计方法学 · 统计学 2010-10-25 Michael E. Goddard , Naomi R. Wray , Klara Verbyla , Peter M. Visscher

Quantile treatment effects (QTEs) can characterize the potentially heterogeneous causal effect of a treatment on different points of the entire outcome distribution. Propensity score (PS) methods are commonly employed for estimating QTEs in…

统计方法学 · 统计学 2023-08-15 Yahang Liu , Kecheng Wei , Chen Huang , Yongfu Yu , Guoyou Qin

Motivation: Modules in gene coexpression networks (GCN) can be regarded as gene groups with individual relationships. No studies have optimized module detection methods to extract diverse gene groups from GCN, especially for data from…

分子网络 · 定量生物学 2021-12-07 Iori Azuma , Tadahaya Mizuno , Hiroyuki Kusuhara

Gene expression-based heterogeneity analysis has been extensively conducted. In recent studies, it has been shown that network-based analysis, which takes a system perspective and accommodates the interconnections among genes, can be more…

统计方法学 · 统计学 2023-08-09 Rong Li , Qingzhao Zhang , Shuangge Ma

By integrating heterogeneous functional genomic datasets, we have developed a new framework for detecting combinatorial control of gene expression, which includes estimating transcription factor activities using a singular value…

定量方法 · 定量生物学 2010-10-07 Junbai Wang

We show that the signal-processing paradigm known as compressed sensing (CS) is applicable to genome-wide association studies (GWAS) and genomic selection (GS). The aim of GWAS is to isolate trait-associated loci, whereas GS attempts to…

基因组学 · 定量生物学 2014-05-13 Shashaank Vattikuti , James J. Lee , Christopher C. Chang , Stephen D. H. Hsu , Carson C. Chow

Inferring predictive maps between multiple input and multiple output variables or tasks has innumerable applications in data science. Multi-task learning attempts to learn the maps to several output tasks simultaneously with information…

Molecular phenotyping by gene expression profiling is common in contemporary cancer research and in molecular diagnostics. However, molecular profiling remains costly and resource intense to implement, and is just starting to be introduced…

计算机视觉与模式识别 · 计算机科学 2023-09-04 Philippe Weitz , Yinxi Wang , Kimmo Kartasalo , Lars Egevad , Johan Lindberg , Henrik Grönberg , Martin Eklund , Mattias Rantalainen

Mapping expression Quantitative Trait Loci (eQTLs) represents a powerful and widely-adopted approach to identifying putative regulatory variants and linking them to specific genes. Up to now eQTL studies have been conducted in a relatively…

定量方法 · 定量生物学 2013-08-12 Timothée Flutre , Xiaoquan Wen , Jonathan Pritchard , Matthew Stephens

Though Gaussian graphical models have been widely used in many scientific fields, relatively limited progress has been made to link graph structures to external covariates. We propose a Gaussian graphical regression model, which regresses…

统计方法学 · 统计学 2022-02-01 Jingfei Zhang , Yi Li

Understanding how genetic variants influence cellular-level processes is an important step towards understanding how they influence important organismal-level traits, or "phenotypes", including human disease susceptibility. To this end…

统计方法学 · 统计学 2013-07-30 Heejung Shim , Matthew Stephens

Genome-Wide Association Studies (GWAS) help identify genetic variations in people with diseases such as Parkinson's disease (PD), which are less common in those without the disease. Thus, GWAS data can be used to identify genetic variations…

基因组学 · 定量生物学 2023-04-07 Ali Amelia , Lourdes Pena-Castillo , Hamid Usefi

Introduction: To leverage functionality and clinical relevance into understanding systems biology, one needs to understand the pathway of the genetic effects on risk factors/disease through intermediate molecular levels, such as…

基因组学 · 定量生物学 2018-09-14 Azam Yazdani , Akram Yazdani , Philip L. Lorenzi , Ahmad Samiei

Quantile regression is a powerful tool for detecting exposure-outcome associations given covariates across different parts of the outcome's distribution, but has two major limitations when the aim is to infer the effect of an exposure.…

Multivariate linear mixed models (mvLMMs) have been widely used in many areas of genetics, and have attracted considerable recent interest in genome-wide association studies (GWASs). However, fitting mvLMMs is computationally non-trivial,…

定量方法 · 定量生物学 2013-09-13 Xiang Zhou , Matthew Stephens

This paper describes a novel approach to learning term-weighting schemes (TWSs) in the context of text classification. In text mining a TWS determines the way in which documents will be represented in a vector space model, before applying a…

2 Diabetes is a leading worldwide public health concern, and its increasing prevalence has significant health and economic importance in all nations. The condition is a multifactorial disorder with a complex aetiology. The genetic…

机器学习 · 计算机科学 2018-08-30 Basma Abdulaimma , Paul Fergus , Carl Chalmers

We extend multi-way, multivariate ANOVA-type analysis to cases where one covariate is the view, with features of each view coming from different, high-dimensional domains. The different views are assumed to be connected by having paired…

机器学习 · 统计学 2009-12-17 Ilkka Huopaniemi , Tommi Suvitaival , Janne Nikkilä , Matej Orešič , Samuel Kaski

We study the challenges of applying deep learning to gene expression data. We find experimentally that there exists non-linear signal in the data, however is it not discovered automatically given the noise and low numbers of samples used in…

基因组学 · 定量生物学 2018-06-20 Francis Dutil , Joseph Paul Cohen , Martin Weiss , Georgy Derevyanko , Yoshua Bengio

While the individuals chosen for a genome-wide association study (GWAS) may not be closely related to each other, there can be distant (cryptic) relationships that confound the evidence of disease association. These cryptic relationships…

定量方法 · 定量生物学 2016-02-26 Bonnie Kirkpatrick , Alexandre Bouchard-Côté