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Data classification using the Dempster-Shafer method

Chen, Qi; Whitbrook, Amanda; Aickelin, Uwe; Roadknight, Chris

Authors

Qi Chen

Amanda Whitbrook

Uwe Aickelin

Chris Roadknight



Abstract

In this paper, the Dempster-Shafer method is employed as the theoretical basis for creating data classification systems. Testing is carried out using three popular (multiple attribute) benchmark datasets that have two, three and four classes. In each case, a subset of
the available data is used for training to establish thresholds, limits or likelihoods of class membership for each attribute, and hence create mass functions that establish probability of class membership for each attribute of the test data. Classification of each data item
is achieved by combination of these probabilities via Dempster’s Rule of Combination. Results for the first two datasets show extremely high classification accuracy that is competitive with other popular methods. The third dataset is non-numerical and difficult to classify, but good results can be achieved provided the system and mass functions are designed carefully and the right attributes are chosen for combination. In all cases the Dempster-Shafer method provides comparable performance to other more popular algorithms, but the overhead of generating accurate mass functions increases the complexity with the addition of new attributes. Overall, the results suggest that the D-S approach provides a suitable framework for the design of classification systems and that automating the mass function design and calculation would increase the viability of the algorithm for complex classification problems.

Journal Article Type Article
Publication Date Feb 26, 2014
Journal Journal of Experimental & Theoretical Artificial Intelligence
Electronic ISSN 0952-813X
Publisher Taylor & Francis
Peer Reviewed Peer Reviewed
APA6 Citation Chen, Q., Whitbrook, A., Aickelin, U., & Roadknight, C. (2014). Data classification using the Dempster-Shafer method. Journal of Experimental and Theoretical Artificial Intelligence, doi:10.1080/0952813X.2014.886301
DOI https://doi.org/10.1080/0952813X.2014.886301
Keywords Data, Mining, Dempster–Shafer theory, data classification, Dempster's rule of combination
Publisher URL http://dx.doi.org/10.1080/0952813X.2014.886301
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information This is an Accepted Manuscript of an article published by Taylor & Francis Group in Journal of Experimental & Theoretical Artificial Intelligence on 26/02/2014, available online: http://www.tandfonline....80/0952813X.2014.886301

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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