DS证据融合的中医辨证模型-计算机工程与应用.PDF

240 2014 ，50（15） Computer Engineering and Applications 计算机工程与应用 D-S 证据融合的中医辨证模型 1 2 李四海 ，吕晓云 1 2 LI Sihai , LV Xiaoyun 1.甘肃中医学院 信息工程学院，兰州 730000 2.兰州大学 中西医结合研究所，兰州 730000 1.School of Information Engineering, Gansu University of Traditional Chinese Medicine, Lanzhou 730000, China 2.Institute of Integrated Traditional and Western Medicine, Lanzhou University, Lanzhou 730000, China LI Sihai, LV Xiaoyun. Model of differentiation of syndromes in TCM using D-S evidence fusion. Computer Engi- neering and Applications, 2014, 50 （15）：240-243. Abstract ：Aiming to improve the accuracy and flexibility of uncertainty reasoning in TCM differentiation, a model of differen- tiation of syndromes in TCM is presented based on D-S theory. This model uses group decision-making to realize evidence fusion by means of the symptom factors as discernment frame and the result of expert diagnosing as basic belief assignment. The proposed model can reduce system uncertainty and improve both accuracy and reliability. A coronary heart diagnosis example is given to illustrate the effectiveness of the model. Key words ：Dempster-Shafer theory; evidence fusion; symptom factors; Traditional Chinese Medicine （TCM ）syndrome; expert system 摘 要：为提高传统不确定性推理在中医辨证中的准确率和灵活性，提出了基于D-S 证据理论的中医辨证模型。模型 采用群决策理论，以证素为识别框架，以不同专家的诊断结果为基本可信度分配，对专家的诊断结果进行证据融合，模 型能够降低系统的不确定性，提高证素诊断的准确率和可信度。以冠心病的中医诊断为例，验证了模型的有效性。 关键词：D-S 理论；证据融合；证素；中医证侯；专家系统 文献标志码：A 中图分类号：TP 181；R241.9 doi ：10.3778/j.issn. 1002-8331.1208-0461 [2] 1 引言 息融合等方面得到广泛应用 。 中医强调辨证论治，即从各方面综合诊察患者机体 在众多的不确定推理方法中，贝叶斯网络被广泛用 [1] [3-4] 当前阶段的整体反应状态。证素辨证学认为 ，患者的 于中医证素识别及药物功效