By Ali Emrouznejad
''Using a variety of operational learn (OR) optimization examples, utilized Operational study with SAS demonstrates how the OR approaches in SAS paintings. The booklet is among the first to greatly conceal the appliance of SAS systems to OR difficulties, resembling unmarried criterion optimization, undertaking administration judgements, published circuit board meeting, and a number of standards choice making. The textual content starts off with the algorithms and techniques for linear programming, integer linear programming, and objective programming versions. It then describes the foundations of numerous OR strategies in SAS. next chapters clarify how one can use those approaches to unravel a number of forms of OR difficulties. each one of those chapters describes the concept that of an OR challenge, provides an instance of the matter, and discusses the explicit technique and its macros for the optimum resolution of the matter. The macros contain info dealing with, version development, and record writing. whereas essentially designed for SAS clients in OR and advertising and marketing analytics, the publication can be utilized by readers drawn to mathematical modeling suggestions. by means of formulating the OR difficulties as mathematical versions, the authors exhibit how SAS can remedy a number of optimization problems''-- Read more...
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Extra resources for Applied operational research with SAS
The first “read” loads the bank names to set row while the second “read” loads the value of capital, labor, and profit to each bank. 4 Advanced Options in PROC OPTMODEL As discussed earlier, PROC OPTMODEL provides a full environment for programming using do-loop, if-then-else, and many other programming statements. We can divide the syntax of PROC OPTMODEL into three types of statements: 1. Options in PROC OPTMODEL 2. Declaration of parameters and variables, as well as objective function and constraints 3.
In this example, we wanted to minimize the cost, so we used “min” statements to define the objective function. If the user wants to maximize the profit, all that is needed is simply to change the “min” statement to a “max” statement. 6 ORASSIgN: Report-Writing Macro (%report) The ORASSIGN results include a table of workers and tasks and a total cost (or profit). This information is saved in an SAS DATA file and in print format. The SAS procedure for report-writing is as follows. 7 ORASSIgN: Macro (%orassign) To make the system as user friendly as possible, the %orassign macro combines the data-handling, model-building, and report-writing codes.
00 . . 00 . 00 . . 4 Result of %ortrans sorted by suppliers’ name. 5 Log for %ortrans. This code manages to get the results based on the specified parameters and the cost matrix saved in the text file. At termination, this code also produces a macro variable (_OROPTMODEL_) containing a character string that indicates the status of the procedure on termination and provides the objective value at termination. Because _OROPTMODEL_ is a standard SAS macro variable, it can be used in the ways that all macro variables can be used.