The problem of scheduling arises in many real life situations. The job shop scheduling problem is very often used model and very actively studied. Two main formulations are used: job shop problem (JSP) and flexible job shop problem (FJSP). FJSP is more complex and more adequate model than JSP. A generalization of FJSP is presented in this paper. A heuristic method is proposed to solve it, using the make-span as objective function.
A web-based Decision Support System WebOptim for solving multiple objective optimization problems is presented. Its basic characteristics are: user-independent, multisolver-admissibility, method-independent, heterogeneity, web-accessibility. Core system module is an original generalized interactive scalarizing method. It incorporates a number of thirteen interactive methods. Most of the known scalarizing approaches (reference point approach, reference direction approach, classification approach etc.) could be used by changing the method’s parameters. The Decision Maker (DM) can choose the most suitable for him/her form for setting his/her preferences: objective weights, aspiration levels, aspiration directions, aspiration intervals. This information could be changed interactively by the DM during the solution process. Depending on the DM’s preferences form the suitable scalarizing method is chosen automatically. In this way the demands on the DM’s knowledge and experience in the optimization methods area are minimized.
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