An argumentation based method for collaborative decision making

In this paper, an argumentation based method for collaborative decision making is introduced. Each group member can submit arguments to support or attack the potential solutions (or alternatives). Extra information, expressed as constraints and preferences, regarding the members' requirements is added in order to ensure the obtaining of more satisfying decisions. The IBIS model is used to capture the discussion and allow group members to argument about the proposed solutions. The constraints and preferences are modeled qualitatively using a new ordered disjunction connective. Finally, a reasoning method is proposed in order to assign a satisfaction degree to each proposed solution in regard with the arguments, constraints and preferences allowing their ordering.