• optimal management in regulation of adding materials in water distribution systems by multi-population genetic algorithm method

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/11/15
    • تاریخ انتشار در تی پی بین: 1390/11/15
    • تعداد بازدید: 650
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     one of the greatest drawbacks of gas is that they require a high number of function evaluations to achieve convergence. each function evaluation entails a full extended-period simulation of the system, which is a computationally expensive process. the net result is that ga optimization is time consuming. for a large distribution system a ga optimization run can take up to a few days on a modern personal computer. in the study efficiency of ga operational optimization was improved through a hybrid method which combines the ga method with a hillclimber search strategy. hill climber strategies complement gas by being efficient in finding a local optimum two hillclinber strategies, the hooke and jeeves and fibonacci methods, were investigated. the hybrid method proved to be superior to the pure ga in finding a good solution quickly, both when applied to a test problem and to a large existing water distribution system.

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