.png){kind=icon}
返回
Dependency structures for decision tables
.png){kind=icon}
OA
AI
DOI：10.1016/j.ijar.2017.06.007.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
In this paper we study decision tables from a more general and abstract outlook. We focus our attention on consistency and inconsistency of decision tables. The starting point of our analysis is the remark that an inconsistent table has different local degrees of consistency depending on how an object and a condition attribute subset are chosen. When X and A run respectively over the object and the condition attribute set, we describe the interrelations of local consistencies by means of two set operators. They enable us to generalize the classical Pawlak's attribute dependency function. The operatorial standpoint correlates the study of decision tables in RST to the classical mathematical theories investigated through functional operators. In this perspective, we are also interested in finding which condition attribute subsets preserve the local positive region. This is the main reason to introduce the notions of local positive essentials and local positive reducts. These attribute subset families, in general, do not satisfy the properties of their counterparts in information table theory. Hence, in order to extend these results to decision tables, we can follow two different approaches: to define a subclass of decision tables in which they hold or to change the nature of the hypergraph induced by the decision discernibility matrix. (C) 2017 Elsevier Inc. All rights reserved.
Keyword:
ROUGH SET-THEORY
FORMAL CONCEPT ANALYSIS
INFORMATION-SYSTEMS
SIMPLE GRAPHS
APPROXIMATION
PRECLUSIVITY
HYPERGRAPH
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
3
论文数:
3.0K
被引数:
5.1K
机构
引用论文
Late gadolinium enhancement on cardiac magnetic resonance combined with 123I- metaiodobenzylguanidine scintigraphy strongly predicts long-term clinical outcome in patients with dilated cardiomyopathy.png)
PLOS ONEOAAI
PLOS ONEIF0
OAAI分享收藏Monitoring and Evaluation of Muscle Atrophy: a Much Needed Step in Critically Ill COVID-19 Patients
IF0
PREAI
分享收藏分享收藏
查看更多内容