摘要
概念格在本质上描述对象和属性之间的联系,表明概念之间的泛化和特化关系.研究了概念格模型的建立方法,应用概念格的理论,提出一种将非结构化的Web文本与其特征之间的关系通过概念格模型描述出来的方法.利用特征集合表示Web文本模型的方法,可以建立概念格所需要的形式背景.构造实例表明,利用构造的概念格能够有效地抽取隐含在Web文本中潜在的、有价值的知识,提高Web文本的检索性能.
Concept lattice essentially describes the relationship between objects and attributes, indicating the relation of generalization and specialization among concepts. The paper studies the method of building concept lattice model, and by the theory of concept lattice, it presents a method describing the relationship between non-structured Web texts and their features through concept lattice. Using the method of feature sets representing web texts model can construct formal context required by concept lattice. Applying the constructed concept lattice can effectively extract crytic potential valuable knowledge from Web texts, and improve search performance of Web texts.
出处
《大庆石油学院学报》
CAS
北大核心
2009年第3期108-111,共4页
Journal of Daqing Petroleum Institute
关键词
WEB文本
概念格
知识抽取
文献检索
Web texts
concept lattice
knowledge extracting, literature retrieving
