Customized Purchase Supporting Expert System: UNIK-SES

Lee, S. K., Lee, J. K. K. J. Lee, “Customized Purchase Supporting Expert System: UNIK-SES”, Expert Systems with Applications, vol. 11, no. 4, pp.431-441, 1996.pdf

Abstract

An expert system that assists the customized men’s wear purchasing process is developed. In the past, configuration systems have adopted either a rule- or a constraint-based representation. To overcome the limitation of the representation, an integrated representation of the Constraint and Rule Satisfaction Problems (CRSP) is adopted. Since the general purpose tool UNIK-CRSP provides concurrent, integrated and interactive reasoning, UNIK-CRSP is very suitable for assisting the personalized customer product configuration process in a natural manner. Using UNIK-CRSP, the domain-specific tool UNIK-SES is developed with the additional features of candidate products selection and user interfaces. This approach should be useful for customer support in electronic marketing on the information superhighway.

Time-Bounded Negotiation Framework for Multi-Agent Coordination

Lee, K. J. Chang, Y. S., Time-Bounded Negotiation Framework for Multi-Agent Coordination, Lecture Notes in Computer Science, vol. 1599, pp. 61-75, 1999.pdf

Abstract

For the efficient and informative coordination of multiple agents, a time-bounded agent negotiation framework is proposed utilizing time-based commitment scheme. By attaching the commitment duration to agent messages, the traditional Contract Net Protocol is extended to a time-bounded environment, thereby giving rise to a Time-Bounded Negotiation Framework (TBNF). The proposed negotiation framework has a new message type to agree upon the extension of a commitment duration, and a novel commitment concept in the form of Negative Commitment. We interpret the semantics of the messages with the commitment duration, and then formally define and compare the three typical negotiation protocols – nothing-guaranteed protocol, acceptance-guaranteed protocol, and finite-time guarantee protocol – which can be incorporated into TBNF. The Time-Bounded Negotiation Framework should provide a background for efficient and effective agent coordination while accommodating each agent’s adaptive negotiation strategy.

Time-Bounded Negotiation Framework for Electronic Commerce Agents

Lee, K. J., Chang, Y. S., Lee, J. K., “Time-Bounded Negotiation Framework for Electronic Commerce Agents”, Decision Support Systems, vol. 28, no.4, pp. 319-331, June, 2000.pdf

Abstract

For efficient and informative coordination of agents especially in electronic commerce environment, a time-bound agent negotiation framework is proposed utilizing a time-based commitment scheme. By attaching commitment duration to agent messages, the traditional contract net protocol is extended to a time-bound negotiation framework TBNF. The proposed negotiation framework has a new message type which allows for parties to agree upon the extension of commitment duration, and a novel commitment concept in the form of negative commitment. The semantics of the messages with the commitment duration are interpreted, and then the three typical negotiation protocols are formally defined and compared — nothing-guaranteed protocol, acceptance-guaranteed protocol, and finite-time guarantee protocol — which can be incorporated into TBNF. The TBNF should provide a background for efficient and effective electronic commerce negotiation while accommodating each agent’s adaptive negotiation strategy.

Key Word

Communication protocols; Multi-agent negotiation; Electronic commerce; Contract Net Protocol; Multi-agent coordination

Impacts and Limitations of Intelligent Agents to Internet Commerce

Jin, D. Lee, K, “Impacts and Limitations of Intelligent Agents to Internet Commerce,” Lecture Notes in Computer Science, vol. 2105, pp. 33-48, July, 2001.pdf

Abstract

Agent-based economy or agent-based electronic commerce is the term for describing one of possible next steps of electronic commerce. The systematic understanding of the agent-based economy is important for researchers to develop practical intelligent agent systems, and for current electronic commerce industries to cope with the challenges of the intelligent agents. With these purposes, we conduct a comprehensive review of ongoing and future impacts of intelligent agents to electronic commerce from business model perspective. We classify intelligent agents by their functions and roles in electronic commerce and analyze the business model change by intelligent agents, based on Timmers’s definition of business model. Changes in architecture of flows, responses of players, influences to revenue model and participant’s benefits, and funding source are discussed with real world business examples and related researches. We also discuss the limitations of intelligent agents in electronic commerce.

A Next Generation Multimedia Call Center for Internet Commerce: IMC

Moon, B. K., Lee, J. K., Lee, K. J., “A Next Generation Multimedia Call Center for Internet Commerce: IMC”, Journal of Organizational Computing and Electronic Commerce, vol. 10, no.4, pp.227-240, December, 2000.

 

A Time-bound Framework for Negotiation and Decision Making of Virtual Manufacturing Enterprise

Lee, K., Chang, Y., Choi, H., Kim, H., Park, Y., Park, B., “A Time-bound Framework for Negotiation and Decision Making of Virtual Manufacturing Enterprise,” Journal of Organizational Computing and Electronic Commerce, Vol. 14, no.1, 27-41, 2004. – SCI, ISSN:1054-1721. pdf

Abstract

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 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.

Evaluation of an online multidimensional auction system: A computer simulation investigation

Sungwon Cho, Kyoung Jun Lee, Martha E. Crosby, David N. Chin, Evaluation of an online multidimensional auction system: A computer simulation investigation, Lecture Notes in Computer Science 3182:126-134, September, 2004. – SCIE ISSN:0302-9743.pdf

Abstract

Through computer simulations, this paper evaluates the performance of an online multidimensional auction system with negotiation support and especially focuses on investigating the efficacy of two design features of online multidimensional auction system on its performance: sellers’ feedback and post-utility scoring method. The performance of the auction system is measured by joint gain and speed of convergence. The simulation results demonstrate that the use of sellers’ feedback and post-utility scoring method lead to better bargaining outcomes as measured by the buyer’s total utility and the number of auction rounds. The research results provide important theoretical implications about the role of information feedback in auction design.