Results 31 to 40 of about 2,459,647 (188)

Text Data Analysis Using Generalized Linear Mixed Model and Bayesian Visualization

open access: yesAxioms, 2022
Many parts of big data, such as web documents, online posts, papers, patents, and articles, are in text form. So, the analysis of text data in the big data domain is an important task.
Sunghae Jun
doaj   +1 more source

Latitude: A Model for Mixed Linear-Tropical Matrix Factorization

open access: yes, 2018
Nonnegative matrix factorization (NMF) is one of the most frequently-used matrix factorization models in data analysis. A significant reason to the popularity of NMF is its interpretability and the `parts of whole' interpretation of its components ...
Hook, James   +2 more
core   +1 more source

Linear Mixed Models: Part I

open access: yes, 2021
The best way to understand a linear mixed model, or mixed linear model in some earlier literature, is to first recall a linear regression model. The latter can be expressed as y = Xβ + 𝜖, where y is a vector of observations, X is a matrix of known covariates, β is a vector of unknown regression coefficients, and 𝜖 is a vector of (unobservable random ...
Jiming Jiang, Thuan Nguyen
openaire   +1 more source

Model Misspecification and Assumption Violations With the Linear Mixed Model: A Meta-Analysis

open access: yesSAGE Open, 2018
This meta-analysis attempts to synthesize the Monte Carlo (MC) literature for the linear mixed model under a longitudinal framework. The meta-analysis aims to inform researchers about conditions that are important to consider when evaluating model ...
Brandon LeBeau   +2 more
doaj   +1 more source

On the mixed Kibria–Lukman estimator for the linear regression model

open access: yesScientific Reports, 2022
This paper considers a linear regression model with stochastic restrictions,we propose a new mixed Kibria–Lukman estimator by combining the mixed estimator and the Kibria–Lukman estimator.This new estimator is a general estimation, including OLS ...
Hongmei Chen, Jibo Wu
doaj   +1 more source

Subset Selection for Linear Mixed Models

open access: yesBiometrics, 2022
AbstractLinear mixed models (LMMs) are instrumental for regression analysis with structured dependence, such as grouped, clustered, or multilevel data. However, selection among the covariates—while accounting for this structured dependence—remains a challenge. We introduce a Bayesian decision analysis for subset selection with LMMs. Using a Mahalanobis
openaire   +3 more sources

Bayesian longitudinal modeling of blood pressure measurements of hypertensive patients at Wachemo University Nigist Elleni Mohamed Memorial Teaching and Referral Hospital Hosanna, Southern Ethiopia

open access: yesHeliyon, 2023
Hypertension is characterized by the persistent elevation of blood pressure (BP) above the normal range or the use of antihypertensive medication. It represents a major global health issue and serves as a significant risk factor for conditions such as ...
Anteneh Asmare Godana   +2 more
doaj   +1 more source

A mixed integer linear programming model for optimal sovereign debt issuance [PDF]

open access: yes, 2011
Copyright @ 2011, Elsevier. NOTICE: this is the author’s version of a work that was accepted for publication in the European Journal of Operational Research.
A. Canepa   +26 more
core   +1 more source

The development of a simple basal area increment model [PDF]

open access: yes, 2011
In most cases forest practice in Austria use yield tables to predict the growth of their forests. Common yield tables show the increment of pure even-aged stands which are treated in a way the table developer recommends.
Georg Erich Kindermann
core   +2 more sources

Continuous Piecewise Linear Approximation of Plant-Based Hydro Production Function for Generation Scheduling Problems

open access: yesEnergies, 2022
An essential challenge in generation scheduling (GS) problems of hydrothermal power systems is the inclusion of adequate modeling of the hydroelectric production function (HPF).
David Lucas dos Santos Abreu   +1 more
doaj   +1 more source

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