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Human aging is a process controlled by both genetics and environment. Many studies have been conducted to identify a subset of genes related to aging from the human genome. Biologists implicitly categorize age-related genes into genes that…

基因组学 · 定量生物学 2023-11-17 Salman Mohamadi , Donald A. Adjeroh

Studying phenotype-gene association can uncover mechanism of diseases and develop efficient treatments. In complex disease where multiple phenotypes are available and correlated, analyzing and interpreting associated genes for each…

统计方法学 · 统计学 2021-12-14 Yujia Li , Yusi Fang , Peng Liu , George C. Tseng

Age-related macular degeneration (AMD) is a major cause of blindness in older adults, severely affecting vision and quality of life. Despite advances in understanding AMD, the molecular factors driving the severity of subretinal scarring…

基因组学 · 定量生物学 2024-09-10 Kuan Yan , Yue Zeng , Dai Shi , Ting Zhang , Dmytro Matsypura , Mark C. Gillies , Ling Zhu , Junbin Gao

Heterogeneous presentation of a neurological disorder suggests potential differences in the underlying pathophysiological changes that occur in the brain. We propose to model heterogeneous patterns of functional network differences using a…

机器学习 · 计算机科学 2021-04-16 Nicha C. Dvornek , Xiaoxiao Li , Juntang Zhuang , Pamela Ventola , James S. Duncan

The study of dependence between random variables under external influences is a challenging problem in multivariate analysis. We address this by proposing a novel semi-parametric approach for conditional copula models using Bayesian…

统计方法学 · 统计学 2026-03-11 Tathagata Basu , Fabrizio Leisen , Cristiano Villa , Kevin Wilson

In biomedical studies, we are often interested in the association between different types of covariates and the times to disease events. Because the relationship between the covariates and event times is often complex, standard survival…

统计方法学 · 统计学 2024-01-19 Hoi Min Ng , Kin Yau Wong

In this study, we address the challenge of survival analysis within heterogeneous patient populations, where traditional reliance on a single regression model such as the Cox proportional hazards (Cox PH) model often falls short.…

统计方法学 · 统计学 2025-04-15 Ahmad Talafha

The multifactorial etiology of autism spectrum disorder (ASD) suggests that its study would benefit greatly from multimodal approaches that combine data from widely varying platforms, e.g., neuroimaging, genetics, and clinical…

定量方法 · 定量生物学 2023-08-11 Nicha C. Dvornek , Catherine Sullivan , James S. Duncan , Abha R. Gupta

Genome-wide association studies (GWAS) have emerged as a rich source of genetic clues into disease biology, and they have revealed strong genetic correlations among many diseases and traits. Some of these genetic correlations may reflect…

统计方法学 · 统计学 2018-11-28 Luke J. O'Connor , Alkes L. Price

Methods to effectively detect multi-locus genetic association are becoming increasingly relevant in the genetic dissection of complex trait in humans. Current approaches typically consider a limited number of hypotheses, most of which are…

基因组学 · 定量生物学 2007-05-23 Zhong Li , Aris Floratos , David Wang , Andrea Califano

Recently, Serfling and Xiao (2007) extended the L-moment theory (Hosking, 1990) to the multivariate setting. In the present paper, we focus on the two-dimension random vectors to establish a link between the bivariate L-moments (BLM) and…

统计方法学 · 统计学 2011-06-20 Brahim Brahimi , Fateh Chebana , Abdelhakim Necir

Rolling bearings are critical components in rotating machinery, and their faults can cause severe damage. Early detection of abnormalities is crucial to prevent catastrophic accidents. Traditional and intelligent methods have been used to…

计算机视觉与模式识别 · 计算机科学 2023-04-12 Weiyang Jin

Copula-based modeling has seen rapid advances in recent years. However, in big data applications, the lengthy computation time for estimating copula parameters is a major difficulty. Here, we develop a novel method to speed computation time…

统计方法学 · 统计学 2016-09-20 Zheng Wei , Daeyoung Kim , Erin Marie Conlon

The paper explores a different variation of combined regression strategy to calculate the conditional survival function. We use regression based weak learners to create the proposed ensemble technique. The proposed combined regression…

机器学习 · 计算机科学 2023-09-12 Rahul Goswami , Arabin Kr. Dey

Mantel's test (MT) for association is conducted by testing the linear relationship of similarity of all pairs of subjects between two observational domains. Motivated by applications to neuroimaging and genetics data, and following the…

统计方法学 · 统计学 2018-12-18 Dustin Pluta , Hernando Ombao , Chuansheng Chen , Gui Xue , Robert Moyzis , Zhaoxia Yu

Modeling how individuals evolve over time is a fundamental problem in the natural and social sciences. However, existing datasets are often cross-sectional with each individual observed only once, making it impossible to apply traditional…

Collecting multiple longitudinal measurements and time-to-event outcomes is a common practice in clinical and epidemiological studies, often focusing on exploring associations between them. Joint modeling is the standard analytical tool for…

统计方法学 · 统计学 2024-12-10 Taban Baghfalaki , Reza Hashemi , Catherine Helmer , Helene Jacqmin-Gadda

The advent of artificial intelligence, especially the progress of deep neural networks, is expected to revolutionize genetic research and offer unprecedented potential to decode the complex relationships between genetic variants and disease…

定量方法 · 定量生物学 2023-12-13 Tingting Hou , Chang Jiang , Qing Lu

A new class of copulas, termed the MGL copula class, is introduced. The new copula originates from extracting the dependence function of the multivariate generalized log-Moyal-gamma distribution whose marginals follow the univariate…

统计方法学 · 统计学 2021-08-23 Zhengxiao Li , Jan Beirlant , Liang Yang

We propose a procedure for imputing missing values of time-dependent covariates in a survival model using fully conditional specification. Specifically, we focus on imputing missing values of a longitudinal marker in joint modeling of the…

统计方法学 · 统计学 2024-03-29 Havi Murad , Nirit Agay , Rachel Dankner
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