ons in any field. The main routines maxlogL and maxlogLreg are wrapper functions specifically developed for ML estimation. There are included optimization procedures such as nlminb and optim from base package, and DEoptim Mullen (2011) &lt;doi:10.18637/jss.v040.i06&gt;. Standard errors are estimated with numDeriv Gilbert (2011) &lt;https://CRAN.R-project.org/package=numDeriv&gt; or the option Hessian = TRUE of optim function.">
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