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We consider a Bayesian framework for estimating a high-dimensional sparse precision matrix, in which adaptive shrinkage and sparsity are induced by a mixture of Laplace priors. Besides discussing our formulation from the Bayesian…

机器学习 · 统计学 2018-05-22 Lingrui Gan , Naveen N. Narisetty , Feng Liang

One of the main approaches used to construct prior distributions for objective Bayes methods is the concept of random imaginary observations. Under this setup, the expected-posterior prior (EPP) offers several advantages, among which it has…

统计方法学 · 统计学 2020-10-09 Dimitris Fouskakis , Ioannis Ntzoufras

Random effects model can account for the lack of fitting a regression model and increase precision of estimating area-level means. However, in case that the synthetic mean provides accurate estimates, the prior distribution may inflate an…

统计方法学 · 统计学 2016-12-05 Shonosuke Sugasawa , Tatsuya Kubokawa , Kota Ogasawara

Mixture priors provide an intuitive way to incorporate historical data while accounting for potential prior-data conflict by combining an informative prior with a non-informative prior. However, pre-specifying the mixing weight for each…

统计方法学 · 统计学 2023-09-11 Peng Yang , Yuansong Zhao , Lei Nie , Jonathon Vallejo , Ying Yuan

Invariant prediction [Peters et al., 2016] analyzes feature/outcome data from multiple environments to identify invariant features - those with a stable predictive relationship to the outcome. Such features support generalization to new…

机器学习 · 统计学 2025-07-10 Luhuan Wu , Mingzhang Yin , Yixin Wang , John P. Cunningham , David M. Blei

We introduce a new framework for studying meta-learning methods using PAC-Bayesian theory. Its main advantage over previous work is that it allows for more flexibility in how the transfer of knowledge between tasks is realized. For previous…

机器学习 · 计算机科学 2024-05-30 Hossein Zakerinia , Amin Behjati , Christoph H. Lampert

Parameter estimates for associated genetic variants, report ed in the initial discovery samples, are often grossly inflated compared to the values observed in the follow-up replication samples. This type of bias is a consequence of the…

应用统计 · 统计学 2011-04-15 Lizhen Xu , Radu V. Craiu , Lei Sun

One of the most common analysis tasks in genomic research is to identify genes that are differentially expressed (DE) between experimental conditions. Empirical Bayes (EB) statistical tests using moderated genewise variances have been very…

应用统计 · 统计学 2016-07-28 Belinda Phipson , Stanley Lee , Ian J. Majewski , Warren S. Alexander , Gordon K. Smyth

Variable selection techniques have become increasingly popular amongst statisticians due to an increased number of regression and classification applications involving high-dimensional data where we expect some predictors to be unimportant.…

统计方法学 · 统计学 2010-09-20 Anthony Lee , Francois Caron , Arnaud Doucet , Chris Holmes

In a bivariate meta-analysis the number of diagnostic studies involved is often very low so that frequentist methods may result in problems. Bayesian inference is attractive as informative priors that add small amount of information can…

统计方法学 · 统计学 2015-12-22 Jingyi Guo , Håvard Rue , Andrea Riebler

Bayesian Active Learning (BAL) is an efficient framework for learning the parameters of a model, in which input stimuli are selected to maximize the mutual information between the observations and the unknown parameters. However, the…

定量方法 · 定量生物学 2022-12-01 Camille Gontier , Simone Carlo Surace , Igor Delvendahl , Martin Müller , Jean-Pascal Pfister

Bayesian modeling and analysis of the MEG and EEG modalities provide a flexible framework for introducing prior information complementary to the measured data. This prior information is often qualitative in nature, making the translation of…

数学物理 · 物理学 2008-11-20 Daniela Calvetti , Harri Hakula , Sampsa Pursiainen , Erkki Somersalo

LLM ensembles are widely used for LLM judges. However, how to estimate their accuracy, especially in an efficient way, is unknown. In this paper, we present a principled maximum a posteriori (MAP) framework for an economical and precise…

机器学习 · 计算机科学 2025-04-18 Huaizhi Qu , Inyoung Choi , Zhen Tan , Song Wang , Sukwon Yun , Qi Long , Faizan Siddiqui , Kwonjoon Lee , Tianlong Chen

Large Bayesian VARs are now widely used in empirical macroeconomics. One popular shrinkage prior in this setting is the natural conjugate prior as it facilitates posterior simulation and leads to a range of useful analytical results. This…

计量经济学 · 经济学 2021-11-16 Joshua C. C. Chan

The Bayesian expected power (BEP) has become increasingly popular in sample size determination and assessment of the probability of success (POS) for a future trial. The BEP takes into consideration the uncertainty around the parameters…

统计方法学 · 统计学 2020-07-01 Fang Liu

Classic Bayesian methods with complex models are frequently infeasible due to an intractable likelihood. Simulation-based inference methods, such as Approximate Bayesian Computing (ABC), calculate posteriors without accessing a likelihood…

统计计算 · 统计学 2026-01-09 Elliot Maceda , Emily C. Hector , Amanda Lenzi , Brian J. Reich

We present a framework for systematically combining data of an unknown linear time-invariant system with prior knowledge on the system matrices or on the uncertainty for robust controller design. Our approach leads to linear matrix…

系统与控制 · 电气工程与系统科学 2024-12-04 Julian Berberich , Carsten W. Scherer , Frank Allgöwer

Bayesian model-averaged meta-analysis allows quantification of evidence for both treatment effectiveness $\mu$ and across-study heterogeneity $\tau$. We use the Cochrane Database of Systematic Reviews to develop discipline-wide empirical…

Data for several applications in diverse fields can be represented as multiple matrices that are linked across rows or columns. This is particularly common in molecular biomedical research, in which multiple molecular "omics" technologies…

机器学习 · 统计学 2024-08-02 Eric F. Lock

In reliability engineering, data about failure events is often scarce. To arrive at meaningful estimates for the reliability of a system, it is therefore often necessary to also include expert information in the analysis, which is…

统计方法学 · 统计学 2016-10-25 Gero Walter , Frank P. A. Coolen