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Dear R users, I hope this mailing list be the right place for my question. Usaully performance criterion of curve fitting like as Directinal Symmetry (DS) and Mean Absolute Percentage Error (MAPE) are correctly used with absolute time series which includes only positive values. But how it is possible to use DS and MAPE with other time series like as return series (for example return of a

Dear Researchers, someone know the right syntax to chose a 5% significance level (threshold) for the inclusion of the model variables in a multiple (linear) regression in backward way? I set the formula in this way, but I don't know to choose the 5% significance? lmodelV <- step(lm(formula=MyFormula[[1]],data=LR.train),direction="backward") than...

...is Guido Araujo, who has major experience in compilers and computer architecture. During my research I worked with dynamic binary translators, developing trace detection techniques and dynamic optimizations to be applied on those traces. In this project I found out that building traces does not add signi cant overhead and that code reallocation brings performance gains to the system. I also worked with a dynamic binary translator that used a direct mapping technique to run PowerPC code on X86 architectures, this project also granted me experience on dynamic environments and code instrumentation. Mo...