Results 111 to 120 of about 13,591,879 (306)

Bayesian Estimation of MIRT Models with General and Specific Latent Traits in MATLAB [PDF]

Multidimensional item response models have been developed to incorporate a general trait and several specific trait dimensions. Depending on the structure of these latent traits, different models can be considered.
Yanyan Sheng
core  

Epigenetic reprogramming of lineage switching in cancer

FEBS Letters, EarlyView.
Cancer cells rarely commit to a single identity. Epigenetic mechanisms and tumor microenvironment cues push epithelial cells toward flexible, hybrid states that can shift into mesenchymal, neuroendocrine, or stem‐like fates, driving metastasis, drug resistance, and tumor heterogeneity. Targeting the epigenetic regulators behind these transitions, using
Ezgi Boyvatlı, Burcu Akman, Ezgi Bağırsakçı, Nese Atabey, Serap Erkek‐Ozhan   +4 more
wiley   +1 more source

Detecting Differential Item Functioning (DIF) in Multidimensional Item Response Theory (MIRT) Models Using Explainable Artificial Intelligence (XAI)

Psychological Test Adaptation and Development
: We conducted two studies on using random forests (RFs) with explainable artificial intelligence (XAI) to detect differential item functioning (DIF) in multidimensional item response theory (MIRT) models.
Karoline Wolandt, Elisabeth Barbara Kraus   +1 more
doaj   +1 more source

Heywood Cases in Unidimensional Factor Models and Item Response Models for Binary Data. [PDF]

Appl Psychol Meas, 2023
Wang S, Paul De Boeck, Yotebieng M.
europepmc   +1 more source

Modeling of Responses and Response Times with the Package cirt [PDF]

In computerized testing, the test takers' responses as well as their response times on the items are recorded. The relationship between response times and response accuracies is complex and varies over levels of observation.
Wilm van der Linden, Rinke Klein Entink, Jean-Paul Fox   +2 more
core  

The microbiome in human skin aging

FEBS Letters, EarlyView.
Age‐related skin changes encompass the well‐known visible phenotypic alterations, together with microbiome dysbiosis and a series of molecular aging hallmarks. These hallmarks characterize not only a fully stablished aged phenotype but also the skin aging process itself.
Manuel Huerta Arana, Cornelia Wiegand, Omid Omrani, Mario Fabri   +3 more
wiley   +1 more source

MODELING ABILITIES IN 3-IRT MODELS MODELAMIENTO DE HABILIDADES EN MODELOS 3-IRT DE RESPUESTA AL ITEM

Revista Colombiana de Estadística, 2004
This paper considers situations where regression models are proposed to model abilities on three parameter logistic models. After a summary of the classical approach to estimate the item parameters and the abilities, we provide an exposition of the ...
Cepeda Cuervo Edilberto, Peláez Andrade José Manuel   +1 more
doaj  

Conditional Dependence across Slow and Fast Item Responses: With a Latent Space Item Response Modeling Approach

Journal of Intelligence
There recently have been many studies examining conditional dependence between response accuracy and response times in cognitive tests. While most previous research has focused on revealing a general pattern of conditional dependence for all respondents ...
Nana Kim, Minjeong Jeon, Ivailo Partchev
doaj   +1 more source

Predictive Fit Metrics for Item Response Models. [PDF]

Appl Psychol Meas, 2022
Stenhaug BA, Domingue BW.
europepmc   +1 more source

Comparing performance of statistical models for individual’s ability index and ranking [PDF]

Efficient allocation of resources is the basic problem in economics. Firms, educational institutions, universities are faces problem of estimating true abilities and ranking of individuals to be selected for job, admissions and scholarship awards etc ...
Iqbal, Javed
core