NDLI: A Method for Incremental Updating Approximations when Objects and Attributes Vary with Time

Content Provider	IEEE Xplore Digital Library
Author	Hongmei Chen Tianrui Li Junbo Zhang
Copyright Year	2010
Abstract	The description of an information system will be more accurate when objects and attributes are added to it. The approximations of a concept may change when an information system varies. No research work has been done yet on incremental updating for approximations when objects and attributes change simultaneously. In traditional rough set theory, granules are induced by equivalence classes. The granularity of an information system may become smaller when attributes are added. New granules may be generated or the granularities of some existing granules may become larger when objects are inserted. There will be complex changes of granularity of an information system when objects and attributes are added simultaneously. Firstly, the composition and decomposition of granules are analyzed. Then an algorithm for incremental updating approximations is proposed. Finally, an illustrative example is given to validate the method for incremental updating approximations.
Starting Page	90
Ending Page	95
File Size	336909
Page Count	6
File Format	PDF
ISBN	9781424479641
DOI	10.1109/GrC.2010.116
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-08-14
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Algorithm design and analysis Information science Approximation algorithms Approximation methods Data mining Finite element methods Information systems
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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