Dependence-space-based attribute reductions in inconsistent decision information systems

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Approaches to attribute reductions based on rough set and matrix computation in inconsistent ordered information systems

In order to conduct classification analysis in inconsistent ordered information systems, notions on possible and compatible distribution reductions are proposed in this paper. The judgement theorems and discernibility matrices associated with the two reductions are examined, from which we can obtain an approach to the two reductions in rough set theory. Furthermore, the dominance matrix, possib...

متن کامل

Knowledge Reductions in Inconsistent Information Systems Based on Dominance Relations

Knowledge reduction is one of the most important problems in rough set theory. However, most of information systems are not only inconsistent, but also based on dominance relations because of various factors. To acquire brief decision rules from inconsistent systems based on dominance relations, knowledge reductions are needed. The main aim of this paper is to study the problem. The assignment ...

متن کامل

Quick attribute reduction in inconsistent decision tables

This paper focuses on three types of attribute reducts in inconsistent decision tables: assignment reduct, distribution reduct, and maximum distribution reduct. It is quite inconvenient to judge these three types of reduct directly according to their definitions. This paper proposes judgment theorems for the assignment reduct, the distribution reduct and the maximum distribution reduct, which a...

متن کامل

Attribute Reduction in Interval and Set-Valued Decision Information Systems

In many practical situation, some of the attribute values for an object may be interval and set-valued. This paper introduces the interval and set-valued information systems and decision systems. According to the semantic relation of attribute values, interval and set-valued information systems can be classified into two categories: disjunctive (Type 1) and conjunctive (Type 2) systems. In this...

متن کامل

Matrix-based set approximations and reductions in covering decision information systems

Article history: Received 21 June 2014 Received in revised form 12 October 2014 Accepted 12 January 2015 Available online 7 February 2015

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: International Journal of Approximate Reasoning

سال: 2008

ISSN: 0888-613X

DOI: 10.1016/j.ijar.2008.06.004