智能化是信息检索技术发展的一个重要方向,将本体论技术引入信息检索过程实现信息检索智能化得到了广泛的关注和研究.但是,现有的研究仅仅局限于利用本体规范化人-机对篇章词汇概念的一致理解,实现词汇语义级别的信息检索,对本体所具有的推理能力如何应用于信息检索却缺乏有效的解决方法.为了解决这一问题,本文将描述逻辑引入信息检索.一方面,通过建立描述逻辑与领域本体之间的映射关系,规范领域本体的构建,使领域本体具备自动推理能力;另一方面,强调通过语义标注实现领域本体对检索文档的描述.这样,就可以将针对检索文档集合的信息检索转换为针对描述逻辑知识库的推理过程,从而在信息检索过程中引入推理服务,实现智能化检索.文章详细定义了基于描述逻辑的信息检索的概念,阐述了其所提供的各种信息检索服务,并且以一个企业环境中的应用说明基于描述逻辑所实现的信息检索新能力.最后,介绍一种基于描述逻辑的信息检索技术实现方案.%Intelligent process is an important direction of information retrieval, and the ontology technology applying to intelligent information retrieval process has been widely concerned.However, the existing studies were mainly limited to the use of ontology to implement common understanding of the concept of vocabularies between human and computers, which achieve an information retrieval at lexical semantics level, how to apply reasoning ability owned by ontology to information retrieval is still lack of effective solutions.In order to solve this problem, the paper introduces an idea of description logics applied in information retrieval.On the one hand, through the establishment of mapping relationship between description logics and domain ontology, domain ontology can be constructed standardized and domain ontology can obtain automated reasoning capabilities; On the other hand, it is emphasized that the semantics description to the retrieved documents is achieved by semantic annotation with the help of domain ontology.In this way, information retrieval can be converted to the description logics reasoning process based on knowledge base, which can result in the introduction of the reasoning process to information retrieval and realize intelligent retrieval.The paper defines the concept of infornation retrieval based on description logics and introduces some new information retrieval services produced by it, and an enterprise application example is described for proving these services.Finally, one kind of technological solution of logic-based information retrieval system is introduced briefly.
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