Results 21 to 30 of about 848,819 (301)

Testing for homogeneity in mixture models [PDF]

open access: yesEconometric Theory, 2017
Statistical models of unobserved heterogeneity are typically formalized as mixtures of simple parametric models and interest naturally focuses on testing for homogeneity versus general mixture alternatives. Many tests of this type can be interpreted asC(α) tests, as in Neyman (1959), and shown to be locally asymptotically optimal.
Jiaying Gu   +2 more
openaire   +6 more sources

A stress test for the strong homogeneity thesis

open access: yesIn die Skriflig, 2017
Over the last 30 years, there has been an attempted return to a particular way of framing and interpreting the primary Jesus narratives. This approach contextualises Jesus against the backdrop of the wider religious world.
Joseph R. Mulvihill
doaj   +1 more source

How to use χ2 test correctly——the analysis of common relative risk for the data of a multiway table and the implementation of SAS software

open access: yesSichuan jingshen weisheng, 2021
The purpose of the paper was to introduce the relative risk analysis method of g×2×2 table data and the calculation method based on SAS software. The contents included the following aspects: firstly, the homogeneity test of the data in the g×2×2 table ...
Hu Chunyan, Hu Liangping
doaj   +1 more source

Homogeneity Test on Collimators for Boron-Neutron Capture Therapy based on SNI 8506:2018

open access: yesAtom Indonesia, 2023
A serial homogeneity test based on Indonesian Standard SNI 8506:2018 were undertaken to investigate 12 manufactured collimators by using double wall single image radiography (DWSI) technique with an x-ray machine ranging from 120 to 150 kV.
S. Santosa, K. Khotimah, H. Yasmine
doaj   +1 more source

African perceptions of female attractiveness [PDF]

open access: yes, 2012
Little is known about mate choice preferences outside Western, educated, industrialised, rich and democratic societies, even though these Western populations may be particularly unrepresentative of human populations.
Coetzee, Vinet   +5 more
core   +4 more sources

Testing of powders for sensitivity to air effect segregation [PDF]

open access: yes, 2011
A loss of blend homogeneity through handling operations can have a major influence on the mechanical properties of sintered products. Plant optimisation to minimise the potential for segregation of blends can be undertaken through an audit of handling ...
Berry, R.J.   +4 more
core   +1 more source

Homogeneity of the Test Variants in Entrance Exams

open access: yesMATEC Web of Conferences, 2017
The problem of homogeneity of test variants in mathematics, which are used in admission process, is solved in present paper. The analysed data are the results of entrance examination in mathematics at University of Economics in Prague.
Klůfa Jindřich
doaj   +1 more source

Performance Evaluation of a Thermo-luminescent Dosimetry System for Occupational Monitoring in Federal Teaching Hospital Katsina, Nigeria [PDF]

open access: yesPhysics Access
Thermo-luminescent dosimeters (TLDs) are widely used for occupational radiation monitoring due to their sensitivity, reusability, and tissue equivalence.
Bashir G Muhammad   +4 more
doaj   +1 more source

Accuracy of nonparametric density estimation for univariate Gaussian mixture models: A comparative study

open access: yesMathematical Modelling and Analysis, 2020
Flexible and reliable probability density estimation is fundamental in unsupervised learning and classification. Finite Gaussian mixture models are commonly used for this purpose. However, the parametric form of the distribution is not always known.
Jurgita Arnastauskaitė, Tomas Ruzgas
doaj   +1 more source

Generalized score test of homogeneity for mixed effects models

open access: yes, 2006
Many important problems in psychology and biomedical studies require testing for overdispersion, correlation and heterogeneity in mixed effects and latent variable models, and score tests are particularly useful for this purpose. But the existing testing
Zhang, Heping, Zhu, Hongtu
core   +2 more sources

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