Study on Transition from Causality Diagram to Belief Network
Hongchun Wang, Qingxi Shi, Qin Zhang · Jisuanji fangzhen · 2004
The Causality Diagram theory, which adopted graphical expression of knowledge and direct causality intensity of causality, overcomes some shortages in Belief Network and has evolved into a mixed causality diagram methodology coped with discrete and continuous variable. But the reasoning algorithms of Causality Diagram are not so many that they limit the popularization and application of Causality Diagram. The Belief Network has many ready reasoning algorithms and applied software. This paper presents a method of how to transfer from Causality Diagram to Belief Network. It includes the transfer of the linkage intensity of Causality Diagram to CPT of Belief Network, and the transfer of the structure of Causality Diagram to the structure of Belief Network.