A multi-agent argumentation framework to support collective reasoning

Resum Argumentative debates are a powerful tool for resolving conflicts and reaching agreements in open environments such as on-line communities. Here we introduce an argumentation framework to structure argumentative debates. Our framework represents the arguments issued by the participants involved in a debate, the (attack and defence) relationships between them, as well as participants? opinions on them. Furthermore, we tackle the problem of computing a collective decision from participants? opinions. With this aim, we design an aggregation function that satisfies valuable social-choice properties.