基于信息守恒的基本概率赋值概率转换方法

针对现有基本概率赋值概率转换方法普遍存在缺少客观标准,主观介入程度过强的问题,该文提出了一种线性加权概率转换方法.该方法首先选择归一化先验信息作为权重,消除了概率转换时主观因素的影响,然后根据概率转换前后先验信息守恒的原理构造方程,最后给出了转换概率的迭代求解方法.实验算例表明,该文方法求解速度快,转换概率合理有效,且与对事件的认知程度相一致.

A Transformation of Basic Probability Assignment to Probability Based on Conservation of Information

The existing transform methods of basic probability assignment to probability are widespread lack?of?objective criteria and with much subjectivity. A linear weighted probability conversion method is presented. First, the?normalized priori information?is selected as weight to eliminate?the subjective factors?in transformation; Then,?an?equation?is constructed based on?the principle?of?information conservation before and after the transformation; Finally,?an iterative solution method is given for transformational probability. The experimental examples show that?the?solving speeds are fast,?the transformational probabilities are reasonable, effective, and?consistent with?the awareness level of the event.