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The R package 'adagio' will provide methods and algorithms for discrete optimization, e.g. knapsack and subset sum procedures, derivativefree NelderMead and HookeJeeves minimization, and some (evolutionary) global optimization functions.
Package details 


Author  Hans Werner Borchers 
Maintainer  Hans W. Borchers <[email protected]> 
License  GPL (>= 3) 
Version  0.7.1 
Package repository  View on RForge 
Installation 
Install the latest version of this package by entering the following in R:

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