Computer-mediated e-negotiation support system

Ensuring adequate involvement of stakeholders is an important element in a participatory decision-making. Previous efforts to incorporate the prefer-ences from stakeholders mostly focused on providing adequate communi-cation between decision makers and stakeholders, not among stakeholders themselves. A different approach to involve stakeholders in planning and decision making is by providing them with an interaction platform to ena-ble them interact in a negotiation-based decision making. In this paper, we introduce a new method to develop a Computer-Mediated Negotiation Support System, where stakeholders do not interact directly, but mediated by a computer system. The negotiation protocol in our system is as fol-lows; in each round of negotiation, stakeholders made their proposals. Based on the proposals of other stakeholders, the system suggests a new proposal for each stakeholder using Orthogonal Strategy. Stakeholders then have a choice to use this proposal or use his own for the next negotia-tion round. Negotiation then continues until reaching an agreement or time limit.