Results 41 to 50 of about 768,227 (181)

d-QPSO: A Quantum-Behaved Particle Swarm Technique for Finding D-Optimal Designs With Discrete and Continuous Factors and a Binary Response [PDF]

open access: yes, 2018
Identifying optimal designs for generalized linear models with a binary response can be a challengingtask, especially when there are both discrete and continuous independent factors in the model.
Lukemire, Joshua   +2 more
core   +1 more source

Complex D-optimal designs

open access: yesDiscrete Mathematics, 1996
Let \(g(n)\) (resp. \(\gamma(n)\)) be the maximum absolute value of the determinant of all \(n\times n\) matrices whose entries are from \(\{1,-1\}\) (resp. \(\{1,-1,i,-i\})\). The following theorems are proved: (1) \(g(2m)\geq 2^m(\gamma(m))^2\), with equality iff there exists a matrix of the form \((\begin{smallmatrix} A & B\\ -B & A\end{smallmatrix})
openaire   +2 more sources

Locally D-Optimal Designs with Heteroscedasticity: A Comparison between Two Methodologies

open access: yesRevista Colombiana de Estadística, 2014
The classic theory of optimal experimental designs assumes that the errors of the model are independent and have a normal distribution with constant variance. However, the assumption of homogeneity of variance is not always satisfied.
JAIME ANDRÉS GAVIRIA   +1 more
doaj   +1 more source

Standardized maximim D-optimal designs for enzyme kineticinhibition models [PDF]

open access: yes, 2017
Locally optimal designs for nonlinear models require a single set of nominal values for the unknown parameters.An alternative is the maximin approach that allows the user to specify a range of values for each parameter ofinterest.
Chen, Ping-Yang   +3 more
core  

Constructing Optimal Designs for Order-of-Addition Experiments Using a Hybrid Algorithm

open access: yesMathematics, 2023
For order-of-addition experiments, the response is affected by the addition order of the experimental materials. Consequently, the main interest focuses on creating a predictive model and an optimal design for optimizing the response.
Dongying Wang, Sumin Wang
doaj   +1 more source

D-optimal designs formulti-response linear mixed models [PDF]

open access: yes, 2018
Linear mixed models have become popular in many statistical applications duringrecent years. However design issues for multi-response linear mixed models are rarelydiscussed.
Liu, Xin, Wong, Weng Kee, Yue, Rong-Xian
core  

Optimal group testing designs for estimating prevalence with uncertain testing errors [PDF]

open access: yes, 2016
We construct optimal designs for group testing experiments where the goal is to estimate the prevalence of a trait by using a test with uncertain sensitivity and specificity.
Huang, Mong-Na Lo   +3 more
core   +3 more sources

Highly D‑efficient Weighing Design and Its Construction

open access: yesActa Universitatis Lodziensis. Folia Oeconomica, 2017
In this paper, some aspects of design optimality on the basis of spring balance weighing designs are considered. The properties of D‑optimal and D‑efficiency designs are studied.
Bronisław Ceranka, Małgorzata Graczyk
doaj   +1 more source

Maximal determinants and saturated D-optimal designs of orders 19 and 37 [PDF]

open access: yes, 2011
A saturated D-optimal design is a {+1,-1} square matrix of given order with maximal determinant. We search for saturated D-optimal designs of orders 19 and 37, and find that known matrices due to Smith, Cohn, Orrick and Solomon are optimal.
Brent, Richard P.   +3 more
core   +1 more source

A Regular D‑optimal Weighing Design with Negative Correlations of Errors

open access: yesActa Universitatis Lodziensis. Folia Oeconomica, 2019
The issues concerning optimal estimation of unknown parameters in the model of chemical balance weighing designs with negative correlated errors are considered. The necessary and sufficient conditions determining the regular D‑optimal design and some new
Małgorzata Graczyk, Bronisław Ceranka
doaj   +1 more source

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