An Evolutionary Model of Multilateral Negotiation System

抄録

Recent studies on evolutionary negotiation systems generally focus on bilateral negotiations (i.e., two parties including a buyer and a seller). Multilateral negotiations, where many buyers and sellers participate in the negotiations are usually applied to auctions, for example, Continuous Double Auction (CDA). We find that the negotiation process of auctions like CDA is different from the pure multilateral negotiation, because in CDA, the offers and counter-offers of the buyers and sellers are open to all. As a result, the privacy of the negotiators is lost. Whereas, in this study, a multilateral negotiation system is proposed, where the negotiations are done pair wise between many buyers and sellers, therefore, the privacy of negotiators is reserved strictly. In CDA, competition between buyers and sellers is hard to realize, because the negotiation is done in public, therefore, the buyers and sellers can follow what the other buyers and sellers proposed in the previous rounds. In this study, competitive attitude of agents is realized in the negotiation, which produced the competitive results also. The advantage of this system is that when compared to a bilateral negotiation, the buyer and seller can choose a potential partner from many participants. To validate the proposed approach, the results are compared with the conventional negotiation systems.