Results 31 to 40 of about 22,758,545 (367)

Stable Graphical Models

open access: yesJournal of Machine Learning Research, 2014
Stable random variables are motivated by the central limit theorem for densities with (potentially) unbounded variance and can be thought of as natural generalizations of the Gaussian distribution to skewed and heavy-tailed phenomenon. In this paper, we introduce stable graphical (SG) models, a class of multivariate stable densities that can also be ...
Misra N, Kuruoglu E E
openaire   +5 more sources

Research on the Graphical Model Structure Characteristic of Strong Exogeneity Based on Twin Network Method and Its Application in Causal Inference

open access: yesMathematics, 2022
Strong exogeneity is an important assumption in the study of causal inference, but it is difficult to identify according to its definition. The twin network method provides a graphical model tool for analyzing the variable relationship, involving the ...
Rui Luo   +4 more
doaj   +1 more source

Copula Dynamic Conditional Correlation and Functional Principal Component Analysis of COVID-19 Mortality in the United States

open access: yesAxioms, 2022
This paper shows a visual analysis and the dependence relationships of COVID-19 mortality data in 50 states plus Washington, D.C., from January 2020 to 1 September 2022.
Jong-Min Kim
doaj   +1 more source

Discrete graphical models -- an optimization perspective [PDF]

open access: yesFoundations and Trends in Computer Graphics and Vision: Vol. 11: No. 3-4, pp 160-429 (2019), 2020
This monograph is about discrete energy minimization for discrete graphical models. It considers graphical models, or, more precisely, maximum a posteriori inference for graphical models, purely as a combinatorial optimization problem. Modeling, applications, probabilistic interpretations and many other aspects are either ignored here or find their ...
arxiv   +1 more source

Tests for Gaussian graphical models [PDF]

open access: yesComputational Statistics & Data Analysis, 2009
Gaussian graphical models are promising tools for analysing genetic networks. In many applications, biologists have some knowledge of the genetic network and may want to assess the quality of their model using gene expression data. This is why one introduces a novel procedure for testing the neighborhoods of a Gaussian graphical model.
Verzelen, Nicolas, Villers, Fanny
openaire   +10 more sources

Generalized Permutohedra from Probabilistic Graphical Models [PDF]

open access: yes, 2017
A graphical model encodes conditional independence relations via the Markov properties. For an undirected graph these conditional independence relations can be represented by a simple polytope known as the graph associahedron, which can be constructed as
Caroline Uhler   +13 more
core   +2 more sources

Cavity approximation for graphical models [PDF]

open access: yesPhysical Review E, 2007
Extension to factor graphs and comments on related work ...
Rizzo, T.   +3 more
openaire   +5 more sources

Graphical Log-linear Models: Fundamental Concepts and Applications [PDF]

open access: yes, 2016
We present a comprehensive study of graphical log-linear models for contingency tables. High dimensional contingency tables arise in many areas such as computational biology, collection of survey and census data and others. Analysis of contingency tables
Gauraha, Niharika
core   +3 more sources

A Nonparametric Graphical Model for Functional Data With Application to Brain Networks Based on fMRI

open access: yesJournal of the American Statistical Association, 2018
We introduce a nonparametric graphical model whose observations on vertices are functions. Many modern applications, such as electroencephalogram and functional magnetic resonance imaging (fMRI), produce data are of this type.
Bing Li, Eftychia Solea
semanticscholar   +1 more source

Microbial Networks in SPRING - Semi-parametric Rank-Based Correlation and Partial Correlation Estimation for Quantitative Microbiome Data

open access: yesFrontiers in Genetics, 2019
High-throughput microbial sequencing techniques, such as targeted amplicon-based and metagenomic profiling, provide low-cost genomic survey data of microbial communities in their natural environment, ranging from marine ecosystems to host-associated ...
Grace Yoon   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy