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A time-series pre-processing methodology for biosignal classification using statistical feature extraction
Simon Fong1; Kun Lan1; Paul Sun1; Sabah Mohammed2; Jinan Fiaidhi2
Conference NameIASTED International Conference Biomedical Engineering (BioMed 2013)
Source PublicationProceedings of the IASTED International Conference on Biomedical Engineering, BioMed 2013
Conference DateFebruary 13 - 15, 2013
Conference PlaceInnsbruck, Austria

Biosignal classification is an important diagnosis tool in biomedical application that helps medical experts to automatically classify whether a sample of biosignal under test/monitor belongs to the normal type or otherwise. Most biosignals are stochastic and non-stationary in nature, that means their values are time-dependent and their statistics vary over different points of time. However, most classification algorithms in data mining are designed to work with data that possess multiple attributes in order to capture the non-linear relationships between the values of the attributes to the predicted target class. Therefore it has been a crucial research topic for transforming univariate time-series to multivariate dataset in order to fit into classification algorithms. For this, we propose a pre-processing methodology, called Statistical Feature Extraction (SFX). Using the SFX we can faithfully remodel statistical characteristics of the time-series via a sequence of piecewise transform functions. The new methodology is tested through simulation experiments over three representative types of biosignals, namely EEG, ECG and EMG. The experiments yield encouraging results supporting the fact that SFX indeed produces better performance in biosignal classification than traditional analyses techniques like Wavelets and LPC-CC.

KeywordBiosignal Classification Data Mining Medical Informatics Time-series Pre-processing
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Document TypeConference paper
Affiliation1.Department of Computer and Information Science University of Macau, Macau SAR
2.Department of Computer Science Lakehead University, Thunder Bay, Canada
First Author AffilicationUniversity of Macau
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GB/T 7714
Simon Fong,Kun Lan,Paul Sun,et al. A time-series pre-processing methodology for biosignal classification using statistical feature extraction[C],2013:207-214.
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