关键词: 定性概率推理, 论据系统, 带权定性概率推理机, 不确定性推理

Abstract: Qualitative Probabilistic Reasoner (QPR) is an important approach for reasoning under uncertainty. Two methods of qualitative probabilistic reasoning of systems of argumentation and systems of abstraction were united into one system and a Weighted Qualitative Probabilistic Reasoner (WQPR) based on argumentation system and QPR was presented. Firstly give a patch to the weighted qualitative probabilistic network and discuss the symmetry property of weighted qualitative influences; secondly integrate the inference with qualitative probabilistic influence into the argumentation system, present a WQPR inference system with a high inference accuracy compared to QPR, and also give the proof of soundness and completeness for the WQPR system.

Key words: Qualitative Probabilistic Reasoner (QPR), argument system, Weighted Qualitative Probabilistic Reasoner (WQPR), reasoning under uncertainty