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2009 Aug 20
1
Understanding R code
...be passed to negloglik fisher <- hessb(negloglik, par.ests, maxvalue=maxima); varcov <- solve(fisher); par.ses <- sqrt(diag(varcov)); out <- list(par.ests = par.ests, par.ses = par.ses, varcov = varcov, converged = #10/5/2007: passed additional 2nd parameter to -negloglik() converged, llmax = -negloglik(par.ests,maxima)); #06/30/2008: the order of the names is incorrect; note that the parameter vector theta #(passed to the optimization function) has the order c(xi0, mu0, sigma0); the order of #the return parameters should be identical; #hence we need to make the following correction...