Results 51 to 60 of about 1,514,883 (344)

Latent tree models

open access: yes, 2017
Latent tree models are graphical models defined on trees, in which only a subset of variables is observed. They were first discussed by Judea Pearl as tree-decomposable distributions to generalise star-decomposable distributions such as the latent class ...
Zwiernik, Piotr
core   +1 more source

Fault Lines Among Asian Americans: Convergence and Divergence in Policy Opinion

open access: yesRSF: The Russell Sage Foundation Journal of the Social Sciences, 2021
Sociologists have long argued that a racial and ethnic category can be made under certain circumstances and remade under anothers. The panethnic category of Asian American was in fact devised to mobilize different immigrant-origin groups in the 1960s ...
Sunmin Kim
doaj   +1 more source

A Stochastic Volatility Model With Realized Measures for Option Pricing [PDF]

open access: yes, 2019
Based on the fact that realized measures of volatility are affected by measurement errors, we introduce a new family of discrete-time stochastic volatility models having two measurement equations relating both observed returns and realized measures to ...
Bormetti, G.   +3 more
core   +5 more sources

A hierarchical Bayesian network approach for linkage disequilibrium modeling and data-dimensionality reduction prior to genome-wide association studies

open access: yesBMC Bioinformatics, 2011
Background Discovering the genetic basis of common genetic diseases in the human genome represents a public health issue. However, the dimensionality of the genetic data (up to 1 million genetic markers) and its complexity make the statistical analysis a
Leray Philippe   +2 more
doaj   +1 more source

Dynamics and sparsity in latent threshold factor models: A study in multivariate EEG signal processing

open access: yes, 2016
We discuss Bayesian analysis of multivariate time series with dynamic factor models that exploit time-adaptive sparsity in model parametrizations via the latent threshold approach.
Nakajima, Jouchi, West, Mike
core   +1 more source

Ten Frequently Asked Questions About Latent Class Analysis

open access: yesTranslational Issues in Psychological Science, 2018
Latent class analysis (LCA) is a statistical method used to identify unobserved subgroups in a population with a chosen set of indicators. Given the increasing popularity of LCA, our aim is to equip psychological researchers with the theoretical and ...
Karen Nylund-Gibson, A. Choi
semanticscholar   +1 more source

Methylation biomarkers can distinguish pleural mesothelioma from healthy pleura and other pleural pathologies

open access: yesMolecular Oncology, EarlyView.
We developed and validated a DNA methylation–based biomarker panel to distinguish pleural mesothelioma from other pleural conditions. Using the IMPRESS technology, we translated this panel into a clinically applicable assay. The resulting two classifier models demonstrated excellent performance, achieving high AUC values and strong diagnostic accuracy.
Janah Vandenhoeck   +12 more
wiley   +1 more source

Strength through diversity: how cancers thrive when clones cooperate

open access: yesMolecular Oncology, EarlyView.
Intratumor heterogeneity can offer direct benefits to the tumor through cooperation between different clones. In this review, Kuiken et al. discuss existing evidence for clonal cooperativity to identify overarching principles, and highlight how novel technological developments could address remaining open questions.
Marije C. Kuiken   +3 more
wiley   +1 more source

Latent Class Probabilistic Latent Feature Analysis of Three-Way Three-Mode Binary Data

open access: yesJournal of Statistical Software, 2018
The analysis of binary three-way data (i.e., persons who indicate which attributes apply to each of a set of objects) may be of interest in several substantive domains as sensory profiling, marketing research or personality assessment.
Michel Meulders, Philippe De Bruecker
doaj   +1 more source

Bayesian Variable Selection for Latent Class Models [PDF]

open access: yesBiometrics, 2010
In this article we develop a latent class model with class probabilities that depend on subject-specific covariates. One of our major goals is to identify important predictors of latent classes. We consider methodology that allows estimation of latent classes while allowing for variable selection uncertainty.
Ghosh, Joyee   +2 more
openaire   +3 more sources

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