Results 1 to 10 of about 1,292,387 (143)

How to use χ2 test correctly——the likelihood ratio test and the implementation of SAS software

open access: yesSichuan jingshen weisheng, 2021
The purpose of this article was to introduce the likelihood ratio test and the SAS implementation. Specifically, three definitions of the likelihood ratio test statistics and six more commonly used likelihood ratio test statistics were introduced.
Hu Chunyan, Hu Liangping
doaj   +1 more source

Partial order optimum likelihood (POOL): maximum likelihood prediction of protein active site residues using 3D Structure and sequence properties. [PDF]

open access: yesPLoS Computational Biology, 2009
A new monotonicity-constrained maximum likelihood approach, called Partial Order Optimum Likelihood (POOL), is presented and applied to the problem of functional site prediction in protein 3D structures, an important current challenge in genomics.
Wenxu Tong   +4 more
doaj   +1 more source

Quasi-likelihood Estimation in Fractional Levy SPDEs from Poisson Sampling

open access: yesEuropean Journal of Mathematical Analysis, 2022
We study the quasi-likelihood estimator of the drift parameter in the stochastic partial differential equations driven by a cylindrical fractional Levy process when the process is observed at the arrival times of a Poisson process.
Jaya P. N. Bishwal
doaj   +1 more source

Item-Weighted Likelihood Method for Measuring Growth in Longitudinal Study With Tests Composed of Both Dichotomous and Polytomous Items

open access: yesFrontiers in Psychology, 2021
In this paper, a new item-weighted scheme is proposed to assess examinees’ growth in longitudinal analysis. A multidimensional Rasch model for measuring learning and change (MRMLC) and its polytomous extension is used to fit the longitudinal item ...
Xuemei Xue, Jing Lu, Jiwei Zhang
doaj   +1 more source

Symptomatic Rotator Cuff Tear Progression: Conservatively Treated Full- and Partial-Thickness Tears Continue to Progress

open access: yesArthroscopy, Sports Medicine, and Rehabilitation, 2022
Purpose: To determine the likelihood of and risk factors for tear progression among patients with a symptomatic partial or full-thickness rotator cuff tears (RCTs) who return with continued shoulder pain and obtain subsequent magnetic resonance imaging ...
Jeffrey J. Frandsen, M.D.   +5 more
doaj   +1 more source

A comparative study on the performance of maximum likelihood, generalized least square, scale-free least square, partial least square and consistent partial least square estimators in structural equation modeling [PDF]

open access: yesInternational Journal of Data and Network Science, 2022
Structural equation modeling offers various estimation methods for estimating parameters. The most used method in covariance-based structural equation modeling (CB-SEM) is the maximum likelihood (ML) estimator.
Raudhah Zulkifli   +3 more
doaj   +1 more source

Stress-strength reliability under partially accelerated life testing using Weibull model

open access: yesScientific African, 2023
The reliability of a system is the probability that its strength exceeds its stress. This reliability is called as the stress-strength reliability. The inferences of the stress-strength reliability R=P(X>Y), when: (1) the strength (X) and stress (Y) are ...
Ammar M. Sarhan, Ahlam H. Tolba
doaj   +1 more source

Hazard models with varying coefficients for multivariate failure time data [PDF]

open access: yes, 2007
Statistical estimation and inference for marginal hazard models with varying coefficients for multivariate failure time data are important subjects in survival analysis.
Cai, Jianwen   +3 more
core   +3 more sources

Particle Swarm Optimization for Penalize cox models in long-term prediction of breast cancer data

open access: yesIraqi Journal for Computer Science and Mathematics, 2023
The particle swarm optimization algorithm (PSO) was applied to penalize the Cox model for predicting long-term outcomes of breast cancer patients.
Ehab Abbas, Basad Al-Sarray
doaj   +1 more source

Residual and forecast methods in time series models with covariates [PDF]

open access: yes, 1996
We are dealing with time series which are measured on an arbitrary scale, e.g. on a categorical or ordinal scale, and which are recorded together with time varying covariates.
Pruscha, H.
core   +1 more source

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