Results 31 to 40 of about 4,420,277 (273)
Evaluating Model Fit in Two-Level Mokken Scale Analysis
Psych, 2023 Currently, two-level Mokken scale analysis for clustered test data is being developed. This paper contributes to this development by providing model-fit procedures for two-level Mokken scale analysis.
Letty Koopman +2 more
doaj +1 more source
The carbon allotrope glitter as n-diamond and i-carbon nanocrystals [PDF]
, 2011 Diffraction data taken from nanocrystalline n-diamond and i-carbon forms is fit to a so-called glitter model, in which the geometry of the C lattice has been optimized by density functional theory (DFT).
Eduardo A. Castro, Michael J. Bucknum
core +3 more sources
A Comparison of Item- and Person-Fit Methods of Assessing Model-Data Fit in IRT [PDF]
Applied Psychological Measurement, 1990 Many item-fit statistics have been proposed for assessing whether the responses to test items ag gregated across examinees conform to IRT test models. Conversely, person-fit statistics have been proposed for assessing whether an examinee's re sponses aggregated across items are congruent with a specified IRT model.
openaire +2 more sources
An Online Test for Goodness-of-Fit in Logistic Regression Model
IEEE Access, 2019 In past decades, the goodness-of-fit test has been widely used to evaluate the calibration of prediction models. The test helps to determine whether poor predictions (lack of fit) are significant, which would indicate that problems exist in the model ...
Yuke Qiu, Liu Liu, Xin Lai, Yuwen Qiu
doaj +1 more source
Composite Goodness of Fit in Reaeration Coeffcient Modeling [PDF]
, 2012 Determination of reaeration coefficient is an important factor in surface water quality modeling as it determines the efficiency of the Streeter-Phelps model used for predicting dissolved oxygen deficit of any stream. This study compared the efficiency
Omole, D. O.
core +1 more source
Improved Performance of Model Fit Indices with Small Sample Sizes in Cognitive Diagnostic Models
International Journal of Assessment Tools in Education, 2019 Selecting an appropriate cognitive diagnostic model (CDM) for data analysis is always challenging. Studies have explored several model fit indices for CDMs.
Ya-huei Yang, Hueying Tzou
doaj +1 more source
SI epidemic model applied to COVID-19 data in mainland China [PDF]
Royal Society Open Science, 2020 The article is devoted to the parameters identification in the SI model. We consider several methods, starting with an exponential fit to the early cumulative data of SARS-CoV2 in mainland China.
J. Demongeot, Q. Griette, P. Magal
doaj +1 more source
Two Component Model of Dark Energy
, 2007 We consider the possibility that the dark energy is made up of two or more independent components, each having a different equation of state. We fit the model with supernova and gamma-ray burst (GRB) data from resent observations, and use the Markov ...
A. R. Liddle +4 more
core +1 more source
Latent Class Cluster Analysis: Selecting the number of clusters
MethodsX, 2022 Latent Class Cluster Analysis (LCCA) is an advanced model-based clustering method, which is increasingly used in social, psychological, and educational research.
Olga Lezhnina, Gábor Kismihók
doaj +1 more source
A Consistent model of Electroweak data including $Z\to b\overline{b}$ and $Z\to c \overline{c}$
, 1996 We have performed an overall fit to the electroweak data with the generation blind $U(1)$ extension of the Standard Model. As input data for fitting we have included the asymmetry parameters, the particle decay widths of $Z$, neutrino scattering, and ...
Agashe, K. +3 more
core +1 more source