摘要
作者提出一种基于黑板模型的心电信号解释系统的设计方案，该系统模拟心电专家诊断的思维过程，通过样本学习自动获取模糊规则，以启发性知识控制诊断流程，并通过对模糊量隶属度函数和模糊规则可信度因子的计算，以双向非精确推理进行诊断。同时，将计算模型纳入知识库，应用信号处理的基本原理在信号处理与信号解释之间也建立了双向作用，实现了真正意义上的定性推理与定量计算的结合。并利用同一通道信号的上下文信息及不同通道间的相关信息协助诊断，更有效地利用了数据信息。
The method of designing a blackboard-based electrocardiogram signals interpretation system is proposed in this paper. The system simulates the thinking way of the experts in the field of electrocardiography. It can acquire knowledge automatically and use bi-directional inexact reasoning in diagnosis by calculating membership functions of fuzzy inputs and confidence factor s of fuzzy rules under the control of heuristic knowledge.At the same time, the system has input models of signal processing in knowledge base, so that bi-directional interaction is established between signal processing and signal interpretation by means of basic theories of signal processing.Thus,the combination of qualitative reasoning and quantitative calculation is achieved in the real sense.Furthermore, data information is used more effectively, with the context information from the same channel and correlated information from different channels,to assist the system in diagnosis.
出处
《北京生物医学工程》
北大核心
1996年第4期193-198,共6页
Beijing Biomedical Engineering
关键词
符号化
知识获取
黑板模型
信号解释
心电图
Symbolism
Knowledge acquirement
Blackboard architecture
Signal interpretation
Bi-directional interaction
