نتایج جستجو برای: bayesian shrinkage thresholding

تعداد نتایج: 101771  

2013

Thresholding a measure in conditional independence (CI) tests using a fixed value enables learning and removing edges as part of learning a Bayesian network structure. However, the learned structure is sensitive to the threshold that is commonly selected: 1) arbitrarily; 2) irrespective of characteristics of the domain; and 3) fixed for all CI tests. We analyze the impact on mutual information ...

Journal: :Science China-mathematics 2022

During the past decade, shrinkage priors have received much attention in Bayesian analysis of high-dimensional data. This paper establishes posterior consistency for linear regression with a class priors, which has heavy and flat tail allocates sufficiently large probability mass very small neighborhood zero. While enjoying its efficiency simulations, prior can lead to nearly optimal contractio...

Journal: :International journal of epidemiology 2007
Sander Greenland

This article describes extensions of the basic Bayesian methods using data priors to regression modelling, including hierarchical (multilevel) models. These methods provide an alternative to the parsimony-oriented approach of frequentist regression analysis. In particular, they replace arbitrary variable-selection criteria by prior distributions, and by doing so facilitate realistic use of impr...

2013
Boaz Lerner Michal Afek Rafi Bojmel

Thresholding a measure in conditional independence (CI) tests using a fixed value enables learning and removing edges as part of learning a Bayesian network structure. However, the learned structure is sensitive to the threshold that is commonly selected: 1) arbitrarily; 2) irrespective of characteristics of the domain; and 3) fixed for all CI tests. We analyze the impact on mutual information ...

2015
P. RICHARD HAHN JINGYU HE HEDIBERT LOPES

A Bayesian approach for the many instruments problem in linear instrumental variable models is presented. The new approach has two components. First, a slice sampler is developed, which leverages a decomposition of the likelihood function that is a Bayesian analogue to two-stage least squares. The new sampler permits non-conjugate shrinkage priors to be implemented easily and efficiently. The n...

Journal: :Journal of the American Statistical Association 2018

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