| 利用不动点求解子句逻辑推演的Petri网模型 |
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| 引用本文： | 林 闯,吴建平.利用不动点求解子句逻辑推演的Petri网模型[J].软件学报,1999,10(4):359-365. |
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| 作者姓名： | 林 闯 吴建平 |
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| 作者单位： | 国家信息中心经济与技术研究所,北京,100045;清华大学计算机科学与技术系,北京,100084 |
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| 基金项目： | 本文研究得到国家自然科学基金资助. |
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| 摘 要： | 文章研究了子句逻辑推演的Petri网模型表示和不动点求解方法.基于四值逻辑和冲突变迁的概念,可用Horn子句的Petri网模型方法来构造非Horn子句的Petri网模型.逻辑推演的基本方法之一就是寻找逻辑赋值的不动点.该文显示了一种基于Petri网模型的子句逻辑不动点求解算法,比现有算法更为有效.
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| 关 键 词： | 逻辑推演 子句 Petri网 不动点 四值逻辑. |
| 收稿时间： | 1997/4/14 0:00:00 |
| 修稿时间： | 1998/3/16 0:00:00 |
Logical Inference of Clauses in Petri Net Models Using Fixpoint |
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| LIN Chuang and WU Jian-ping.Logical Inference of Clauses in Petri Net Models Using Fixpoint[J].Journal of Software,1999,10(4):359-365. |
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| Authors: | LIN Chuang and WU Jian-ping |
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| Affiliation: | LIN Chuang1\ WU Jianping2 1 (Information Science InstituteState Information Center\ Beijing\ 100045)\=2 (Department of Computer Science and Technology\ Tsinghua University\ Beijing\ 100084) \=\= |
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| Abstract: | The Petri net models of the clauses for logical inference using fixpoint are studied and the four-valued logic and the conflict transition concept are introduced. The authors can construct the Petri net models of non-Horn clauses based on the models of Horn clauses. Finding the fixpoint of logical values is one of the fundamental methods for logical inference. In this paper, an algorithm for the fixpoint based on the Petri net models of values is presented, and it is more efficient than the previous ones. |
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| Keywords: | Logical inference clauses Petri net fixpoint four-valued logic |
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