Results 21 to 30 of about 475,024 (262)

Mixture Rasch Model with Main and Interaction Effects of Covariates on Latent Class Membership

open access: yesInternational Journal of Assessment Tools in Education, 2019
Covariateshave been used in mixture IRT models to help explain why examinees are classedinto different latent classes. Previous research has considered manifestvariables as covariates in a mixture Rasch analysis for prediction of groupmembership.
Tugba Karadavut   +2 more
doaj   +1 more source

The Impact of Test and Sample Characteristics on Model Selection and Classification Accuracy in the Multilevel Mixture IRT Model

open access: yesFrontiers in Psychology, 2020
The standard item response theory (IRT) model assumption of a single homogenous population may be violated in real data. Mixture extensions of IRT models have been proposed to account for latent heterogeneous populations, but these models are not ...
Sedat Sen, Allan S. Cohen
doaj   +1 more source

Latent trajectory studies: the basics, how to interpret the results, and what to report [PDF]

open access: yesEuropean Journal of Psychotraumatology, 2015
Background: In statistics, tools have been developed to estimate individual change over time. Also, the existence of latent trajectories, where individuals are captured by trajectories that are unobserved (latent), can be evaluated (Muthén & Muthén, 2000)
Rens van de Schoot
doaj   +1 more source

Comparison of Methods for Estimating Temporal Topic Models From Primary Care Clinical Text Data: Retrospective Closed Cohort Study

open access: yesJMIR Medical Informatics, 2022
BackgroundHealth care organizations are collecting increasing volumes of clinical text data. Topic models are a class of unsupervised machine learning algorithms for discovering latent thematic patterns in these large unstructured
Christopher Meaney   +4 more
doaj   +1 more source

The Latent Class Model as a Measurement Model for Situational Judgment Tests

open access: yesPsychologica Belgica, 2011
In a situational judgment test, it is often debatable what constitutes a correct answer to a situation. There is currently a multitude of scoring procedures. Establishing a measurement model can guide the selection of a scoring rule.
Frank Rijmen
doaj   +1 more source

A personalized BEST: characterization of latent clinical classes of nonischemic heart failure that predict outcomes and response to bucindolol. [PDF]

open access: yesPLoS ONE, 2012
Heart failure patients with reduced ejection fraction (HFREF) are heterogenous, and our ability to identify patients likely to respond to therapy is limited.
David P Kao   +4 more
doaj   +1 more source

Bourdieu, gli onnivori, i post-moderni e le pratiche culturali

open access: yesQuaderni di Sociologia, 2010
Both “highbrow omnivorousness” hypothesis and “postmodern” thesis claim that Bourdieu’s homology theory fails to predict the relationship between social position and lifestyle.
Marco Terraneo
doaj   +1 more source

A nested expectation-maximization algorithm for latent class models with covariates [PDF]

open access: yes, 2018
We develop a nested EM routine for latent class models with covariates which allows maximization of the full-model log-likelihood and, differently from current methods, guarantees monotone log-likelihood sequences along with improved convergence ...
Canale, Antonio   +2 more
core   +2 more sources

Modeling factors to various drivers' actions due to vehicle malfunctions, the integrated latent class and latent variable model

open access: yesEngineering Reports, 2022
It is known that how individuals perceive the situation result in choices. However, it is unknown, how drivers process the information of vehicle malfunctions based on the situation at hand.
Mahdi Rezapour, Khaled Ksaibati
doaj   +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

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