{ "_id": "6a1f1f9db401979e734201bc", "Package": "ALTopt", "Title": "Optimal Experimental Designs for Accelerated Life Testing", "Version": "0.1.2", "Authors@R": "c(person(\"Kangwon\", \"Seo\", role = c(\"aut\", \"cre\"),\nemail = \"seoka@missouri.edu\"),\nperson(\"Rong\", \"Pan\", role = \"aut\",\nemail = \"rong.pan@asu.edu\"))", "Description": "Creates the optimal (D, U and I) designs for the\naccelerated life testing with right censoring or interval\ncensoring. It uses generalized linear model (GLM) approach to\nderive the asymptotic variance-covariance matrix of regression\ncoefficients. The failure time distribution is assumed to\nfollow Weibull distribution with a known shape parameter and\nlog-linear link functions are used to model the relationship\nbetween failure time parameters and stress variables. The\nacceleration model may have multiple stress factors, although\nmost ALTs involve only two or less stress factors. ALTopt\npackage also provides several plotting functions including\ncontour plot, Fraction of Use Space (FUS) plot and Variance\nDispersion graphs of Use Space (VDUS) plot. 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