| 基于格结构假设空间证据推理的双向传播计算模型 |
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| 引用本文： | 刘江宁,吴泉源. 基于格结构假设空间证据推理的双向传播计算模型[J]. 国防科技大学学报, 1993, 15(3): 90-95 |
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| 作者姓名： | 刘江宁 吴泉源 |
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| 作者单位： | 国防科技大学电子计算机系(刘江宁)，国防科技大学电子计算机系(吴泉源) |
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| 摘 要： | 在专家系统中,基于证据理论的推理网络一般为格结构形式,将证据理论的现存形式直接应用于具有复杂结构的推理过程存在很大的困难。本文基于格结构假设空间,采用不确定知识的可信度表示方法,给出了初始基本概率赋值函数的一种计算方法,并在扩充的Shenoy-Shafer结点处理模型的基础上,提出了证据推理的双向传播计算模型。
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| 关 键 词： | 专家系统 证据理论 可信度 格 |
| 收稿时间： | 1992-02-28 |
A Two-way Broadcasting Computational Model of Evidential Reasoning Based on the Lattice-structural Hypothesis Space |
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| Liu Jiangning and Wu Quanyuan. A Two-way Broadcasting Computational Model of Evidential Reasoning Based on the Lattice-structural Hypothesis Space[J]. Journal of National University of Defense Technology, 1993, 15(3): 90-95 |
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| Authors: | Liu Jiangning and Wu Quanyuan |
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| Affiliation: | Department of Computer Science |
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| Abstract: | Based on the lattice-structural hypothesis space of expert systems, we approach acomputational model of evidential reasoning under uncertainty: the Two-way Broadcast-ing Model (TBM). In TBM, the measure of uncertainty of knowledge is represented asthe certainty factor(CF)of the improved MYCIN model. This paper describes a efficientmethod which calculates bpa functions from CF and prior probabilities. It also discussesthe single node bpa's propagating models, a extenting version of Shenoy-Shafer model. |
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| Keywords: | lattice certainty factor expert system evidence theory |
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