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Choosing which method to use for “optimizing” functions

November 20, 2016
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Choosing which method to use for “optimizing” functions

A decision tree for function minimization What R calls “optimization” is more generally known as function minimization. The tools in the stats package function optim() are all essentially function mimizers, as are those in the package optimrx found at https://r-forge.r-project.org/projects/optimizer/. optimrx tries to make it easier for users to call quite a few methods without having to learn many different sets of command…

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Why optim() is out of date

November 10, 2016
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Why optim() is out of date

Why optim() is out of date And perhaps you should be careful using it Once upon a time Once upon a time, there was a young Oxford D.Phil. graduate with a thesis on quantum mechanics who — by virtue of a mixup in identities — got hired as an Agricultural Economist. He was actually better…

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