Firework-based software project scheduling method considering the learning and forgetting effect
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The learning and forgetting ability, as the inherent characteristics of the employees, have a great impact on the software development process. By using the idea of WLC learning and VRVF forgetting models, an novel learning and forgetting model is constructed for software project scheduling problem to measure the dynamic skill levels. Taking the cost and duration as the optimization objectives, corresponding software project scheduling model considering the learning and forgetting effect is formed. The improved multi-objective firework algorithm with a novel encoding scheme is present. The crossover-explosion operator is introduced to enhance the information exchange between the better sparks or fireworks. A novel reservation strategy with two archives is proposed to avoid the ineffective search around the local optimum. Experimental results indicate that the learning ability plays a positive role on the optimal scheduling schemes and the forgetting effect is the opposite. The duration and cost of the project are inversely proportional to the learning coefficient and directly proportional to forgetting coefficient. By comparing the scheduling schemes from NSGA-II and original FA, the proposed method shows the better scheduling performances.
KeywordsFirework algorithm Learning effect Forgetting effect Software project scheduling
This work is supported by National Natural Science Foundation of China under Grant 61573361, National Key Research and Development Program under Grant 2016YFC0801406, National Basic Research Program of China under Grant 2014CB046300, Innovation Team of China University of Mining and Technology under Grant 2015QN003, Key Laboratory of Machine Intelligence and Advanced Computing (SunYat-sen University), Ministry of Education under Grant MSC20170A and Research Program of Frontier Discipline of CUMT under Grant 2015XKQY19. Also, thank you for the support from Collaborative Innovation Center of Intelligent Mining Equipment, CUMT. Six talent peaks project in Jiangsu Province under Grant No. 2017-DZXX-046.
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Conflict of interest
All authors declare that they have no conflicts of interest.
Human and animal rights
This article does not contain any studies with human participants or animals performed by any of the authors.
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