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In epidemiological research, causal models incorporating potential mediators along a pathway are crucial for understanding how exposures influence health outcomes. This work is motivated by integrated epidemiological and blood biomarker…

统计方法学 · 统计学 2024-11-28 Youngho Bae , Chanmin Kim , Fenglei Wang , Qi Sun , Kyu Ha Lee

In longitudinal studies, we observe measurements of the same variables at different time points to track the changes in their pattern over time. In such studies, scheduling of the data collection waves (i.e. time of participants' visits) is…

统计方法学 · 统计学 2020-04-30 Li Xing , Xuekui Zhang , Ardo van den Hout , Scott Hofer , Graciela Muniz Terrera

We introduce time-ordered multibody interactions to describe complex systems manifesting temporal as well as multibody dependencies. First, we show how the dynamics of multivariate Markov chains can be decomposed in ensembles of…

物理与社会 · 物理学 2023-10-17 Unai Alvarez-Rodriguez , Luka V. Petrović , Ingo Scholtes

Many psychological experiments have subjects repeat a task to gain the statistical precision required to test quantitative theories of psychological performance. In such experiments, time-on-task can have sizable effects on performance,…

应用统计 · 统计学 2021-11-05 David Gunawan , Guy E. Hawkins , Robert Kohn , Minh-Ngoc Tran , Scott D. Brown

Background: Understanding the relationship between the Omics and the phenotype is a central problem in precision medicine. The high dimensionality of metabolomics data challenges learning algorithms in terms of scalability and…

When it comes to clinical survival trials, regulatory restrictions usually require the application of methods that solely utilize baseline covariates and the intention-to-treat principle. Thereby a lot of potentially useful information is…

统计方法学 · 统计学 2015-04-27 Susanne Strohmaier , Kjetil Røysland , Rune Hoff , Ørnulf Borgan , Terje Pedersen , Odd O. Aalen

Varying coefficient models are widely used to characterize dynamic associations between longitudinal outcomes and covariates. Existing work on varying coefficient models, however, all assumes that observation times are independent of the…

统计方法学 · 统计学 2026-01-27 Yu Gu , Yangjianchen Xu , Peijun Sang

An important objective in computational biology is the efficient integration of multi-omics data. The task of integration comes with challenges: multi-omics data are most often unpaired (requiring diagonal integration), partially labeled…

机器学习 · 计算机科学 2025-09-16 Daniel Lepe-Soltero , Thierry Artières , Anaïs Baudot , Paul Villoutreix

This work presents an omics-driven modeling pipeline that integrates machine-learning tools to facilitate the dynamic modeling of multiscale biological systems. Random forests and permutation feature importance are proposed to mine omics…

定量方法 · 定量生物学 2025-01-17 Sebastián Espinel-Ríos , José Montaño López , José L. Avalos

One of the major research questions regarding human microbiome studies is the feasibility of designing interventions that modulate the composition of the microbiome to promote health and cure disease. This requires extensive understanding…

统计方法学 · 统计学 2021-11-18 Matthew D. Koslovsky , Kristi L. Hoffman , Carrie R. Daniel , Marina Vannucci

Mixed-effect models are flexible tools for researchers in a myriad of fields, but that flexibility comes at the cost of complexity and if users are not careful in how their model is specified, they could be making faulty inferences from…

统计方法学 · 统计学 2023-08-28 Keith R. Lohse , Allan J. Kozlowski , Michael J. Strube

Dynamic prediction of causal effects under different treatment regimes conditional on an individual's characteristics and longitudinal history is an essential problem in precision medicine. This is challenging in practice because outcomes…

统计方法学 · 统计学 2023-03-07 Yizhen Xu , Jisoo Kim , Laura K. Hummers , Ami A. Shah , Scott Zeger

In multi-condition EEG experiments, brain activity is recorded as subjects perform various tasks or are exposed to different stimuli. The recorded signals are commonly transformed into time-frequency representations, which often display…

统计方法学 · 统计学 2025-07-29 Xiaomeng Ju , Thaddeus Tarpey , Hyung G Park

Recent measurements of durations of non-equilibrium processes provide valuable information on microscopic mechanisms and energetics. Comprehensive theory for corresponding experiments so far is well developed for single-particle systems…

统计力学 · 物理学 2020-09-04 David Voráč , Philipp Maass , Artem Ryabov

Finding interdependency relations between (possibly multivariate) time series provides valuable knowledge about the processes that generate the signals. Information theory sets a natural framework for non-parametric measures of several…

信息论 · 计算机科学 2016-02-09 German Gomez-Herrero , Wei Wu , Kalle Rutanen , Miguel C. Soriano , Gordon Pipa , Raul Vicente

In this review paper, some applications of the mixed effect modeling in medial image processing and longitudinal analysis is studied. For this purpose, a general structure is extracted from some of the researches in the literature. This…

医学物理 · 物理学 2018-03-13 Fatemeh Nasiri , Oscar Acosta-Tamayo

The accurate prediction of time-changing covariances is an important problem in the modeling of multivariate financial data. However, some of the most popular models suffer from a) overfitting problems and multiple local optima, b) failure…

统计方法学 · 统计学 2013-06-04 Yue Wu , José Miguel Hernández-Lobato , Zoubin Ghahramani

Adaptive enrichment trials aim to identify and recruit participants most likely to benefit from treatment based on evolving biomarker evidence, with the goal of informing individualized treatment recommendations. Bayesian methods are well…

统计方法学 · 统计学 2026-03-11 Lara Maleyeff , Shirin Golchi , Erica E. M. Moodie

Microbial ecology serves as a foundation for a wide range of scientific and biomedical studies. Rapidly-evolving high-throughput sequencing technology enables the comprehensive search for microbial biomarkers using longitudinal experiments.…

Motivated by two distinct types of biomedical time series data, digital health monitoring and neuroimaging, we develop a novel approach for changepoint analysis that uses a generalised linear mixed model framework. The generalised linear…

统计方法学 · 统计学 2024-10-02 Mark B. Fiecas , Kathryn R. Cullen , Rebecca Killick