ALTopt: Optimal Experimental Designs for Accelerated Life Testing

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Creates the optimal (D, U and I) designs for the accelerated life testing with right censoring or interval censoring. It uses generalized linear model (GLM) approach to derive the asymptotic variance-covariance matrix of regression coefficients. The failure time distribution is assumed to follow Weibull distribution with a known shape parameter and log-linear link functions are used to model the relationship between failure time parameters and stress variables. The acceleration model may have multiple stress factors, although most ALTs involve only two or less stress factors. ALTopt package also provides several plotting functions including contour plot, Fraction of Use Space (FUS) plot and Variance Dispersion graphs of Use Space (VDUS) plot.

Author
Kangwon Seo [aut, cre], Rong Pan [aut]
Date of publication
2015-08-28 01:33:02
Maintainer
Kangwon Seo <kseo7@asu.edu>
License
GPL-3
Version
0.1.1

View on CRAN

Man pages

alteval.ic
Design evaluation with interval censoring.
alteval.rc
Design evaluation with right censoring.
altopt.ic
Optimal design with interval censoring.
ALTopt-package
\Sexpr[results=rd,stage=build]{tools:::Rd_package_title("ALTopt")}
altopt.rc
Optimal design with right censoring.
compare.fus
Comparing designs using FUS
compare.vdus
Comparing designs using VDUS
convert.stress.level
Coding and decoding stress level
design.plot
Design plot.
Dobj.ic
Objective function of D optimal design with interval...
Dobj.rc
Objective function of D optimal design with right censoring
ExtendedForm
Transform the array to the model matrix
Iobj.ic
Objective function of U optimal design with interval...
Iobj.rc
Objective function of I optimal design with right censoring
kmeansCls
Perform the k-means clustering and make design table
PreVar
Calculates the prediction variance at the particular use...
pv.contour.ic
Contour plot of prediction variance for a design with...
pv.contour.rc
Contour plot of prediction variance for a design with right...
pv.fus.ic
FUS (Fraction of Use Space) plot for interval censoring.
pv.fus.rc
FUS (Fraction of Use Space) plot for right censoring.
pv.vdus.ic
VDUS (Variance Dispersion of Use Space) plot for interval...
pv.vdus.rc
VDUS (Variance Dispersion of Use Space) plot for right...
Uobj.ic
Objective function of U optimal design with interval...
Uobj.rc
Objective function of U optimal design with right censoring

Files in this package

ALTopt
ALTopt/NAMESPACE
ALTopt/R
ALTopt/R/ALTopt.R
ALTopt/MD5
ALTopt/build
ALTopt/build/partial.rdb
ALTopt/DESCRIPTION
ALTopt/man
ALTopt/man/pv.fus.ic.Rd
ALTopt/man/Iobj.ic.Rd
ALTopt/man/Uobj.ic.Rd
ALTopt/man/convert.stress.level.Rd
ALTopt/man/design.plot.Rd
ALTopt/man/pv.vdus.ic.Rd
ALTopt/man/pv.contour.rc.Rd
ALTopt/man/Dobj.rc.Rd
ALTopt/man/Uobj.rc.Rd
ALTopt/man/ALTopt-package.Rd
ALTopt/man/compare.fus.Rd
ALTopt/man/Dobj.ic.Rd
ALTopt/man/PreVar.Rd
ALTopt/man/alteval.rc.Rd
ALTopt/man/pv.fus.rc.Rd
ALTopt/man/pv.vdus.rc.Rd
ALTopt/man/altopt.rc.Rd
ALTopt/man/kmeansCls.Rd
ALTopt/man/altopt.ic.Rd
ALTopt/man/alteval.ic.Rd
ALTopt/man/pv.contour.ic.Rd
ALTopt/man/ExtendedForm.Rd
ALTopt/man/Iobj.rc.Rd
ALTopt/man/compare.vdus.Rd