Investigating the Choice of l and u Values in the Extended Variable Precision Rough Sets Model

Beynon, Malcolm James ORCID: https://orcid.org/0000-0002-5757-270X 2002. Investigating the Choice of l and u Values in the Extended Variable Precision Rough Sets Model. Presented at: Third International Conference on Rough Sets and Current Trends in Computing (RSCTC2002), Malvern, PA, USA, 14-16 October 2002. Published in: Alpigini, J. J., Peters, J. F., Skowron, A. and Zhong, N. eds. Rough Sets and Current Trends in Computing: Third International Conference on Rough Sets and Current Trends in Computing, RSCTC2002, Malvern, PA, USA, October 14-16, 2002. Proceedings. Lecture Notes in Computer Science (2475) Berlin: Springer, pp. 61-68. 10.1007/3-540-45813-1_8

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Abstract

The extended variable precision rough sets model incorporating asymmetric bounds is a generalisation of the original rough set theory. This paper introduces the (l, u)-quality graph, which elucidates the associated level of quality of classification (QoC), based on the choice of l and u values. A number of summary measures and lines are defined which pass over the domain of the (l, u)-quality graph. The defined lines are used to identify a choice of l and u values, based on retaining the underlying level of QoC from the whole (l, u)-quality graph.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Schools > Business (Including Economics)
Subjects:	Q Science > QA Mathematics Q Science > QA Mathematics > QA76 Computer software
Publisher:	Springer
ISBN:	9783540442745
Related URLs:	Publisher
Last Modified:	21 Oct 2022 09:36
URI:	https://orca.cardiff.ac.uk/id/eprint/37034

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