A Development of Distributed Constraint Optimization Algorithms for Product Service Systems

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K16056
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Intelligent informatics
• Research Institution: National Institute of Informatics
• Principal Investigator: Hatano Daisuke 国立情報学研究所, ビッグデータ数理国際研究センター, 特任研究員 (10709728)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 分散制約最適化 / 協力ゲーム

Outline of Final Research Achievements

Problems for users of product-service systems are mainly twofold: Problems for finding the optimal solution minimizing costs over all users in the distributed manner under a condition that the cost is dynamically changed, and problems for finding a distribution among a coalition of the users so that no user deviates from the coalition. The first problem can be represented as distributed constraint optimization problem, and the second problem can be represented as cost allocation problems, which is a problem of coalitional games.
At first, as for DCOP, I proposed two DCOP algorithms based on the multiplicative weight update method and achieved to solve the DCOP instance under a condition that the utilities are dynamically changed. Next, as for the cost allocation problem, I proposed an algorithm for finding a value division efficiently by assuming that the characteristic function of the game is supermodular function.

Free Research Field

情報学