Results 21 to 30 of about 376,667 (303)

Goodness of fit of the items used in the 2nd cycle of evaluation and accreditation of medical schools by the Korea Institute of Medical Education and Evaluation based on the Rasch model [PDF]

open access: yesJournal of Educational Evaluation for Health Professions, 2019
Purpose Since 2004, the Korea Institute of Medical Education and Evaluation has been responsible for the evaluation and accreditation of medical schools in Korea. The 2nd cycle of evaluations was conducted from 2007 to 2011.
Man Sup Lim, Sun Huh
doaj   +1 more source

Testing Goodness-of-Fit of Parametric Spatial Trends

open access: yesProceedings, 2018
The aim of this work is to propose and analyze the behavior of a test statistic to assess a parametric trend surface, that is, a regression model with spatially correlated errors.
Andrea Meilán-Vila   +3 more
doaj   +1 more source

Testing goodness-of-fit of random graph models [PDF]

open access: yes, 2012
Random graphs are matrices with independent 0, 1 elements with probabilities determined by a small number of parameters. One of the oldest model is the Rasch model where the odds are ratios of positive numbers scaling the rows and columns.
Csiszár, Villö   +5 more
core   +4 more sources

Multinomial Goodness-Of-Fit Tests

open access: yesJournal of the Royal Statistical Society Series B: Statistical Methodology, 1984
SUMMARY This article investigates the family {I  λ;λ ϵ ℝ} of power divergence statistics for testing the fit of observed frequencies {Xi; i = 1, …, k} to expected frequencies {Ei; i = 1, …, k}. From the definition 2nIλ=2λ(λ+1)∑i=1kXi{(XiEi)λ−1};λ∈ℝ it can easily be seen that Pearson's X  2 (λ = 1), the log likelihood ratio
Cressie, Noel A, Read, Timothy
openaire   +2 more sources

Goodness-of-Fit Tests on Manifolds [PDF]

open access: yesIEEE Transactions on Information Theory, 2021
We develop a general theory for the goodness-of-fit test to non-linear models. In particular, we assume that the observations are noisy samples of a submanifold defined by a \yao{sufficiently smooth non-linear map}. The observation noise is additive Gaussian.
Alexander Shapiro, Yao Xie, Rui Zhang
openaire   +2 more sources

The Information Geometry of Sparse Goodness-of-Fit Testing

open access: yesEntropy, 2016
This paper takes an information-geometric approach to the challenging issue of goodness-of-fit testing in the high dimensional, low sample size context where—potentially—boundary effects dominate. The main contributions of this paper are threefold: first,
Paul Marriott   +3 more
doaj   +1 more source

Clarifying the Implicit Assumptions of Two-Wave Mediation Models via the Latent Change Score Specification: An Evaluation of Model Fit Indices

open access: yesFrontiers in Psychology, 2021
Statistical mediation analysis is used to investigate mechanisms through which a randomized intervention causally affects an outcome variable. Mediation analysis is often carried out in a pretest-posttest control group design because it is a common ...
Matthew J. Valente   +2 more
doaj   +1 more source

Asymptotically distribution-free goodness-of-fit testing for tail copulas [PDF]

open access: yes, 2014
Let $(X_1,Y_1),\ldots,(X_n,Y_n)$ be an i.i.d. sample from a bivariate distribution function that lies in the max-domain of attraction of an extreme value distribution.
Can, Sami Umut   +3 more
core   +3 more sources

Testing Goodness-of-Fit with the Kernel Density Estimator: GoFKernel

open access: yesJournal of Statistical Software, 2015
To assess the goodness-of-fit of a sample to a continuous random distribution, the most popular approach has been based on measuring, using either L∞ - or L2 -norms, the distance between the null hypothesis cumulative distribution function and the ...
Jose M. Pavia
doaj   +1 more source

sphstat: A Python package for inferential statistics on vectorial data on the unit sphere

open access: yesSoftwareX, 2023
Data that resides on the surface of a 2-sphere is common in various scientific fields, including physics, earth sciences, astronomy, and psychoacoustics.
Hüseyin Hacıhabiboğlu
doaj   +1 more source

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