> To replace an absolute value by two binary variables is an old trick in optimization modeling.
I am having trouble Googling it: can anyone suggest a reference, or just explain? Thank you. -- View this message in context: http://n4.nabble.com/Solving-an-optimization-problem-selecting-an-optimal-subset-tp1446084p1457988.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
