Time-Bounded Negation Framework for Multi-Agent Coordination. - Kyoung Jun Lee; Yong Sik Chang (PRIMA, 1998)

Time-bound negotiation framework for electronic commerce agents. - Kyoung Jun Lee; Yong Sik Chang; Jae Kyu Lee (Decis. Support Syst., 2000)

Case-based modification for optimization agents: AGENT-OPT. - Yong Sik Chang; Jae Kyu Lee (Decis. Support Syst., 2004)

A Time-Bound Framework for Negotiation and Decision Making of Virtual Manufacturing Enterprise. - Kyoung Jun Lee; Yong Sik Chang; Hyung Rim Choi; Hyun Soo Kim; Young Jae Park; Byung Joo Park (J. Organ. Comput. Electron. Commer., 2004)

A framework for managing optimization models for supply chain software agents. - Jae Kyu Lee; Yong Sik Chang (ICEC, 2006)

A two-phased semantic optimization modeling approach on supplier selection in eProcurement. - Jin Ho Choi; Yong Sik Chang (Expert Syst. Appl., 2006)

A comparison shopping optimization model based on suppliers' pricing contexts. - Yong Sik Chang; Kyoung Jun Lee (Expert Syst. Appl., 2010)

An intelligent insect search system based on observation of the insect's structure. - Yong Sik Chang; Eung Sup Jun (Expert Syst. Appl., 2015)

Optimal delivery routing with wider drone-delivery areas along a shorter truck-route. - Yong Sik Chang; Hyun Jung Lee (Expert Syst. Appl., 2018)