A Reasoning Algorithm with Unitizing Coefficient in Multi-value Causality Diagram

There is a critical problem in reasoning process of the Multi-value Causality Diagram(MCD) that it does not meet the expectation of consistency and mutex in probabilistic reasoning process if we adopt the original reasoning algorithm of the Single-value Causality Diagram in reasoning process of the MCD.This paper presents a reasoning algorithm which contains three new concepts,they are(1) assuming that cause nodes do not affect result node directly,they only contribute an intensity to the probability distribution of result node;(2) importing the concept of unitizing coefficient;(3) assuming that they are mutex among all states of all linkage events pointing to a same node.By these ways it ensures that the probability integration of all states of one node equals 1 and these states are mutex each other during reasoning process based on the MCD.