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Designing a robust type-2 fuzzy logic classifier for non-stationary systems with application in brain-computer interfacing
School of Computing and Intelligent Systems, University of Ulster.ORCID-id: 0000-0001-6553-823X
School of Computing and Intelligent Systems, University of Ulster.
School of Computing and Intelligent Systems, University of Ulster.
2008 (engelsk)Inngår i: IEEE SMC 2008: Proc., 2008, s. 1343-1349Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Type-2 (T2) fuzzy logic (FL) systems (T2FLSs) have shown a remarkable potential in dealing with uncertain data resulting from real-world systems with non-stationary characteristics. This paper reports on novel developments in interval T2FLS (IT2FLS) classifier design methodology so that system non-stationarities can be effectively handled. In general, the approach presented here rests on a general concept of twostage FLS design in which an initial rule base structure is first initialized and then system parameters are globally optimized. The proposed incremental enhancements of existing fuzzy techniques, adopted from the area of conventional type-1 (T1) FL, are heuristic in nature. The IT2FLS design methods have been empirically verified in this work in the realm of pattern recognition. In particular, the potential and the suitability of IT2FLS to the problem of classification of motor imagery (MI) related patterns in electroencephalogram (EEG) recordings has been investigated. The outcome of this study bears direct relevance to the development of EEG-based brain-computer interfaces (BCIs) since the problem under examination poses a major difficulty for the state-of-the-art BCI methods. The IT2FLS classifier is evaluated in this work on multi-session EEG data sets in the framework of an off-line BCI. Its performance is quantified in terms of the classification accuracy (CA) rates and has been found to be favorable to that of analogous systems employing a conventional T1 FLS, along with linear discriminant analysis (LDA) and support vector machine (SVM), commonly utilized in MI-based BCI systems.

sted, utgiver, år, opplag, sider
2008. s. 1343-1349
Serie
IEEE international conference on systems, man, and cybernetics, conference proceedings, ISSN 1062-922X
Emneord [en]
brain-computer interface, classification, electroencephalography, fuzzy systems, pattern recognition
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-90086DOI: 10.1109/ICSMC.2008.4811472ISI: 000269197300232OAI: oai:DiVA.org:kth-90086DiVA, id: diva2:504137
Konferanse
IEEE International Conference on Systems, Man and Cybernetics
Merknad
QC 20120223Tilgjengelig fra: 2012-02-19 Laget: 2012-02-18 Sist oppdatert: 2018-01-12bibliografisk kontrollert

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