RefDoc
Haut

Faire une nouvelle recherche
Make a new search
Lancer la recherche


Titre du document / Document title

Experimental designs optimally balanced for trend

Auteur(s) / Author(s)

ATKINSON A. C. (1) ; DONEV A. N. (2) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Department of Statistics, London School of Economics, London WC2A 2AE, ROYAUME-UNI
(2) Department of Mathematics, The University, Southampton SO17 1BJ, ROYAUME-UNI

Résumé / Abstract

When experiments are carried out over a period of time, the response may be subject to time trends. We use an algorithm for exact optimum designs to construct a series of designs resistant to linear and quadratic trend. Designs considered include the allocation of simple treatments, multifactor designs in qualitative or quantitative factors, and response surface designs. The investigation is extended from consideration of linear ordering in time to include designs with several trials at each time point, designs in which several trials are spread over only one out of three shifts per day, and designs in which there are more time points than experiments. Comparisons with designs in the absence of trend show that surprisingly little information is lost by designing for protection against a potential trend. The BT algorithm for obtaining these designs is outlined.

Revue / Journal Title

Technometrics    ISSN  0040-1706   CODEN TCMTA2 

Source / Source

1996, vol. 38, no4, pp. 333-341 (21 ref.)

Langue / Language

Anglais

Editeur / Publisher

American Society for Quality and the American Statistical Association, Alexandria, VA, ETATS-UNIS  (1959) (Revue)

Mots-clés anglais / English Keywords

Experimental design

;

Balanced design

;

Trend analysis

;

Optimal design(statistics)

;

Linear trend

;

Quadratic trend

;

Multifactor design

;

Mots-clés français / French Keywords

Plan expérience

;

Plan équilibré

;

Analyse tendance

;

Traitement simple

;

Traitement multifactoriel

;

Facteur qualitatif

;

Facteur quantitatif

;

Ordonnancement linéaire

;

Algorithme BT

;

Efficacité plan

;

Plan optimal

;

Tendance linéaire

;

Tendance quadratique

;

Plan multifactoriel

;

Mots-clés espagnols / Spanish Keywords

Plan experiencia

;

Plan equilibrado

;

Análisis tendencia

;

Localisation / Location

INIST-CNRS, Cote INIST : 9949, 35400006477138.0020

Nº notice refdoc (ud4) : 2838417



Faire une nouvelle recherche
Make a new search
Lancer la recherche
Bas