Results 81 to 90 of about 150,052 (235)

Detailed Opacity Calculations for Astrophysical Applications

Atoms, 2017
Nowadays, several opacity codes are able to provide data for stellar structure models, but the computed opacities may show significant differences. In this work, we present state-of-the-art precise spectral opacity calculations, illustrated by stellar ...
Jean-Christophe Pain, Franck Gilleron, Maxime Comet   +2 more
doaj   +1 more source

Differential item functioning detection across multiple groups

British Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Differential item functioning (DIF) can be investigated by estimating item response theory (IRT) parameters separately for different respondent groups, thus allowing for the detection of discrepancies in parameter estimates across groups. However, before comparing the estimates, it is necessary to convert them to a common metric due to the ...
Michela Battauz
wiley   +1 more source

Using multilabel classification neural network to detect intersectional DIF with small sample sizes

British Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract This study introduces InterDIFNet, a multilabel classification neural network for detecting intersectional differential item functioning (DIF) in educational and psychological assessments, with a focus on small sample sizes. Unlike traditional marginal DIF methods, which often fail to capture the effects of intersecting identities and require ...
Yale Quan, Chun Wang
wiley   +1 more source

The Indonesian Version of the Generalized Self-Efficacy Scale (GSE): Differential Item Functioning Analysis Using a Mediated MIMIC Model

Gadjah Mada Journal of Psychology
Self-efficacy refers to an individual's optimistic belief in their own capabilities—the belief that they can perform difficult tasks and overcome challenges effectively.
Rahmat S. Bintang, Burhan Burhan, Anhar Dana Putra   +2 more
doaj   +1 more source

Composite marginal likelihood estimation of higher‐order diagnostic classification models under high dimensionality

British Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Although full‐information maximum likelihood (FIML) estimation is widely used for diagnostic classification models (DCMs), its computational efficiency deteriorates sharply in high‐dimensional settings. This scalability challenge is increasingly critical as DCMs are applied to large‐scale assessments, psychological testing and longitudinal ...
Minho Lee, Yon Soo Suh
wiley   +1 more source

Refining effect size measures and classification for differential item functioning: Toward unified guidelines across methods

British Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Differential Item Functioning (DIF) analysis is used to identify potentially biased items in multi‐item measurements. In addition to testing the statistical significance, it is essential to evaluate the practical significance of DIF through effect size measures.
Michaela Cichrová, Adéla Hladká, Patrícia Martinková   +2 more
wiley   +1 more source

A regularised latent‐class item response model for detecting measurement non‐invariance in ordinal response scales

British Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Measurement non‐invariance arises when the psychometric properties of a scale differ across subgroups, undermining the validity of group comparisons. At the item level, this manifests as differential item functioning (DIF), where item responses differ across groups after controlling for the latent trait.
Gabriel Wallin, Qi Huang
wiley   +1 more source

Correcting Axial Length‐Related Magnification Errors in Optical Coherence Tomography Angiography Improves Machine Learning Classification Performance in High Myopia

Clinical &Experimental Ophthalmology, EarlyView.
ABSTRACT Background To determine whether axial length‐related magnification correction in optical coherence tomography angiography (OCTA) improves machine learning classification of high myopia and resolves inconsistencies in the values and discriminatory power of OCTA microvascular metrics.
Danuta M. Sampson, Mila Yue Zhang, Hemn Baghban Jaldian, Madeleine S. Torcasso, Gavrielle R. Untracht, Jocelyn J. Drinkwater, Mei Zhao, David D. Sampson, Andrew Lam, Fred K. Chen   +9 more
wiley   +1 more source

Establishing Shape Correspondences: A Survey

Computer Graphics Forum, EarlyView.
Abstract Shape correspondence between surfaces in 3D is a central problem in geometry processing, concerned with establishing meaningful relations between surfaces. While all correspondence problems share this goal, specific formulations can differ significantly: Downstream applications require certain properties that correspondences must satisfy ...
A. Heuschling, H. Meinhold, L. Kobbelt
wiley   +1 more source

Fibrillar‐Type Dermatitis Herpetiformis: An Underrecognized Variant That Is Rarely Associated With Celiac Disease and Lacking Epidermal Transglutaminase Deposition: A Report of Two Cases

Journal of Cutaneous Pathology, EarlyView.
ABSTRACT Dermatitis herpetiformis (DH) is a rare, intensely pruritic cutaneous manifestation of celiac disease (CD), typically presenting with excoriated papulovesicular lesions on extensor surfaces. DH is associated with IgA autoantibodies against epidermal transglutaminase (eTG), which form granular immune deposits in the papillary dermis and induce ...
Jeffrey Damman, Elodie Mendels, Sven van der Woude, Sharon Veenbergen, Gilles F. H. Diercks, Martijn B. van Doorn   +5 more
wiley   +1 more source