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Yong Sik Chang

 

Publications by Yong Sik Chang (bibliography)

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2006
 
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Lee, Jae Kyu and Chang, Yong Sik (2006): A framework for managing optimization models for supply chain software agents. In: Fox, Mark S. and Spencer, Bruce (eds.) Proceedings of the 8th International Conference on Electronic Commerce - ICEC 2006 2006, Fredericton, New Brunswick, Canada. pp. 373-380. Available online

2004
 
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Lee, Kyoung Jun, Chang, Yong Sik, Choi, Hyung Rim, Kim, Hyun Soo, Park, Young Jae and Park, Byung Joo (2004): A Time-Bound Framework for Negotiation and Decision Making of Virtual Manufacturing Enterprise. In Journal of Organizational Computing and Electronic Commerce, 14 (1) pp. 27-41. Available online

Virtual manufacturing has 2 characteristics as an agent-based electronic commerce environment: dynamic nature of resource status and variety of agents' decision-making (i.e., scheduling) model. To reflect the characteristics, a relevant negotiation protocol should be designed and an appropriate decision-making model should be developed. In this article, from the perspective of a sales agent that is a middle man between customers and manufacturers in a virtual manufacturing environment, we provide a case study that suggests a time-bound framework for external negotiation between sales agents and customer agents, and internal cooperation between sales agents and manufacturing agents. We assume a job shop as the production model of a virtual manufacturing enterprise and formulate the optimal order selection problem with mixed integer programming, but its computation time is not acceptable for real-world problems. For this time-constrained decision making, we develop a genetic algorithm as an anytime problem-solving method for the scheduling of the production model, which shows a reasonable computation time for real-world cases and good incremental problem-solving capability.

© All rights reserved Lee et al. and/or Lawrence Erlbaum Associates

 
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