Abstract




 
   

IJE TRANSACTIONS C: Aspects Vol. 30, No. 12 (December 2017) 1831-1839    Article in Press

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  CYCLE TIME REDUCTION AND RUNTIME REBALANCING BY REALLOCATING DEPENDENT TASKS
 
M. Yaghoubi and M. Zahedi
 
( Received: April 24, 2017 – Accepted in Revised Form: September 08, 2017 )
 
 

Abstract    Business Process Management Systems (BPMS) is a complex information system that provides designing, administrating, and improving the business processes. Task allocation to human resources is one of the most important issues which should be managed more efficiently in BPMS. Task allocation algorithms are defined in order to meet the various policies of organizations. The most important of these policies could be reducing the average cycle time, balancing the resource workload, increasing the product quality and minimizing the production costs. Therefore, choosing an appropriate resource in task allocation algorithms could influence on overall policy of the organization. In heavy load conditions or when the number of human resources is limited, workload balancing can increase the stability of the system. In this paper, a task allocation algorithm is proposed to rebalance the resource workload in runtime while minimizing cycle time by offering dependent pair tasks to resources for concurrent processing. The experimental results show that the combination of previous algorithms with the proposed algorithms would have 4.42% reduction in cycle time in contrast to most efficient state-of-the-art algorithms.

 

Keywords    Business Process, Cycle time, Workload balancing, Resource allocation, Dependent tasks, Task concurrency.

 

چکیده    سیستم های مدیریت فرآیند کسب و کار (BPMS) یک سیستم اطلاعات پیچیده است که طراحی، مدیریت و بهبود فرآیندهای کسب و کار را فراهم می کند. تخصیص وظیفه به منابع انسانی یکی از مهمترین مسائلی است که باید در BPMS مدیریت شود. الگوریتم تخصیص وظیفه به منظور رفع سياست های مختلف سازمان ها تعريف شده است. مهمترین این سیاستها می تواند کاهش زمان چرخه متوسط، متعادل نمودن حجم کار منابع، افزایش کیفیت محصول و به حداقل رساندن هزینه های تولید باشد. بنابراین، انتخاب یک منبع مناسب در الگوریتم های تخصیص وظایف می تواند بر کل سیاست سازمان تأثیر بگذارد. در شرایط بار سنگین و یا زمانی که تعداد منابع انسانی محدود است، تعادل کار در سیستم می تواند ثبات سیستم را افزایش دهد. در این مقاله یک الگوریتم تخصیص وظیفه برای تعادل بار کاری در زمان اجرا ارائه می شود و حداقل زمان چرخه را با ارائه یارانه های وابسته به منابع برای پردازش همزمان فراهم می کند. نتایج تجربی نشان می دهد که ترکیبی از الگوریتم های قبلی با الگوریتم های پیشنهادی، در مقایسه با اکثر الگوریتم های پیشرفته ترین حالت، باعث کاهش ٪ ۴۲/۴ در زمان چرخه می شود.

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