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# The first step is to find and use a reliable source code for simplex algorthim, in order to use it for linear programming problems. SoPlex is one the famous and reliable Open source LP Solvers in C++ Language. http://soplex.zib.de/
# Next step is to learn how to work with Soplex. The following link shows an example of using SoPlex: http://disopt.epfl.ch/files/content/sites/disopt/files/shared/OptInFinance09/zimplfaq.pdf
# After that, we are trying to understand the Revised Simplex method which is used by SoPlex and we will see how to modify it to solve a simple Multi-Criteria Decision Making problem with using DEA method. Because DEA method has various models and it has been developed and expanded so much since 1980's, we will work on Input Oriented CCR modelas a starting point.