Formal query systems on contexts and a representation of algebraic lattices

Formal query systems on contexts and a representation of algebraic lattices
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关于上下文的形式查询系统和代数格的表示

DOI:
10.1016/j.ins.2013.03.032
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发表时间:
2013-08
影响因子:
8.1
通讯作者:
Guo, Lankun2
Guo, Lankun2
中科院分区:
计算机科学1区
文献类型:
--
作者:
Li, Qingguo1;Guo, Lankun2

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形式概念分析(FCA)已被证明是一种可行的信息检索(IR)框架。在本文中,以探索的FCA为基础的文档检索范式的数学性质的目的,我们提出了形式背景上的合取和析取查询的概念,并从秩序理论的角度研究派生的查询系统。我们表明,合取查询系统是同构的伽罗瓦格的底层上下文,而析取查询系统可以连接密集生成的伽罗瓦格的底层上下文同构。接下来,我们介绍了有向析取查询系统,并研究了它们与代数格的关系。因此,我们表明,有向析取查询的概念提供了一种替代方法来重组代数格。
Formal Concept Analysis (FCA) has proven to be a feasible framework for information retrieval (IR). In this paper, with the aim of exploring the mathematical properties of the FCA-based document retrieval paradigm, we propose the notions of conjunctive and disjunctive query on the formal contexts and investigate the derived query systems from the order-theoretical perspective. We show that the conjunctive query system is isomorphic to the Galois lattice of the underlying context, while the disjunctive query system can be join-densely generated from the Galois lattice of the underlying context up to isomorphism. Next, we introduce directed disjunctive query systems and study their connection with algebraic lattices. As a result, we show that the notion of directed disjunctive query provides an alternative approach to restructuring algebraic lattices.
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