Applied operational research with SAS by Ali Emrouznejad

By Ali Emrouznejad

''Using a variety of operational examine (OR) optimization examples, utilized Operational examine with SAS demonstrates how the OR methods in SAS paintings. The e-book is among the first to broadly hide the appliance of SAS techniques to OR difficulties, equivalent to unmarried criterion optimization, venture administration judgements, revealed circuit board meeting, and a number of standards determination making. The textual content starts off with Read more...

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2. txt”). sas”). 00 . 00 . 00 . 00 . . 1 Concept of Assignment Problem The assignment problem is a special class of LP problem. It deals with the situations in which resources are assigned to tasks or other work requirements. Typical examples include assignment of workers to tasks and assignment of machines to jobs. The objective is to yield an optimal matching of resources and tasks. Commonly used criteria are costs, profits, and time. The assignment problem can be described as follows. A company has a group of workers (i = 1, 2, …, n) and a set of tasks (j = 1, 2, …, n) to complete.

The amount of supply and suppliers’ name should be listed in columns named “supply” and “supplier,” respectively. 3. 3 An example of a dataset, cost matrix. 5 ORTRANS: Model-Building Macro (%model) This part of ORTRANS calls PROC OPTMODEL to solve the model. 6 ORTRANS: Report-Writing Macro (%report) The output from ORTRANS includes results and a table of cost, which is saved in an SAS DATA file named “result” and “dcost”, respectively, as well as in print format. The SAS procedure for report-writing is as follows.

There is one such constraint for each supplier. 5 ensures that the total amount of commodities shipped from supplier 1 equals the supplier’s capacity. 13 are the requirement constraints. Similarly, there is one such constraint for each customer. 9 ensures that the total amount of commodities ordered by customer 1 is fulfilled. 2 is an LP model, the optimal solution must be integral. This is a characteristic of the transportation problem. 2 Data flow in ORTRANS. sas”). The main procedure used for such a transportation problem is PROC OPTMODEL.

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