Temporal Dynamics in Information Tables

被引：22
|
作者：
Ciucci, Davide [1 ]
机构：
[1] Univ Milano Bicocca, Dipartimento Informat Sistemist & Comunicaz, I-20126 Milan, Italy
来源：
FUNDAMENTA INFORMATICAE | 2012年 / 115卷 / 01期
关键词：
ROUGH SET; APPROXIMATIONS; CLASSIFICATION; ACQUISITION; KNOWLEDGE;
D O I：
10.3233/FI-2012-640
中图分类号：
TP31 [计算机软件];
学科分类号：
081202 ; 0835 ;
摘要：
An information table can change over time in several different ways: objects enter/exit the system, new attributes are considered, etc. As a consequence rough set instruments also change. At first, we recall a classification of dynamic increase of information with respect to three different factors: objects, attributes, values. Then, the corresponding changes in rough sets are discussed. Results about approximations, positive region and generalized decision are given and algorithms to update reducts and rules provided.
引用
收藏
页码：57 / 74
页数：18
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