半结构化概率论辩

Semistructured Probabilistic Argumentation

群组方法概率论辩是一种建模因知识不确定性而导致论证不确定性的有效方法。目前已有工作假设所有论证之间具有独立性,悬隔了论证之间的支持关系,在语义的解释上造成三个与直觉不甚相符的问题:第一,存在接受一个论证却不接受其子论证的可能性;第二,存在可能接受子论证间相互矛盾的论证;第三,论证受到其子论证的保护作用可能被削弱。针对这三个问题,在群组方法概率论辩的基础上引入直接子论证关系,建立半结构化概率论辩框架,恰当地修补原有群组方法的不足。

In probabilistic argumentation,constellations approach is an effective approach for modelling the uncertainty of arguments resulted from that of underlying knowledge.In existing work,since there is an independence assumption over all arguments,without considering the support relation between arguments,this gives rise to the following three counter intuitive problems.First,it is possible to accept an argument,without accepting its subarguments.Second,it is possible that an argument may contain conflicting subarguments.Third,the defense of an argument from its subarguments is weakened,in the sense that in some possible worlds,an argument can be defended by its subarguments,while in some other worlds not.In this paper,we propose a new model by introducing subargument relationship,which can handle the above problems properly.