Muda, M.Z. and Panoutsos, G. orcid.org/0000-0002-7395-8418 (2021) An evolving feature weighting framework for granular fuzzy logic models. In: Jansen, T., Jensen, R., Mac Parthaláin, N. and Lin, C.-M., (eds.) Advances in Computational Intelligence Systems (UKCI 2021). UKCI 2021: 20th UK Workshop on Computational Intelligence, 08-10 Sep 2021, Aberystwyth, UK. Advances in Intelligent Systems and Computing, 1409 . Springer , pp. 3-14. ISBN 9783030870935
Abstract
Discovering and extracting knowledge from large databases are key elements in granular computing (GrC). The knowledge extracted, in the form of information granules can be used to build rule-based systems such as Fuzzy Logic inference systems. Algorithms for iterative data granulation in the literature treat all variables equally and neglects the difference in variable importance, as a potential mechanism to influence the data clustering process. In this paper, an iterative data granulation algorithm with feature weighting called W-GrC is proposed. By hypothesising that the variables or features used during the data granulation process can have different importance to how data granulation evolves, the weight of each feature’s influence is estimated based on the information granules on a given instance; this is updated in each iteration. The feature weights are estimated based on the sum of within granule variances. The proposed method is validated through various UCI classification problems:- Iris, Wine and Glass datasets. Result shows that for certain range of feature weight parameter, the new algorithm outperforms the conventional iterative granulation in terms of classification accuracy. We also give attention to the interpretability-accuracy trade-off in Fuzzy Logic-based systems and we show that W-GrC produces higher classification performance - without significant deterioration in terms of its interpretability (Nauck’s index).
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Editors: |
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Copyright, Publisher and Additional Information: | © The Author(s), under exclusive license to Springer Nature Switzerland AG 2022. This is an author-produced version of a paper subsequently published in Advances in Computational Intelligence Systems. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Granular computing; Iterative data granulation; Fuzzy logic; Feature weights; Feature relevance |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Automatic Control and Systems Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 27 Jan 2022 11:59 |
Last Modified: | 18 Nov 2022 01:13 |
Status: | Published |
Publisher: | Springer |
Series Name: | Advances in Intelligent Systems and Computing |
Refereed: | Yes |
Identification Number: | 10.1007/978-3-030-87094-2_1 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:182963 |