Mapping semantic knowledge for unsupervised text categorisation

Tao, Xiohui, Li, Yuefeng, Zhang, Ji, & Yong, Jianming (2013) Mapping semantic knowledge for unsupervised text categorisation. In Wang, Hua & Zhang, Rui (Eds.) Proceedings of the Twenty-Fourth Australasian Database Conference (ADC 2013), Australian Computer Society, Inc., Adelaide, Australia, pp. 51-60.

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Text categorisation is challenging, due to the complex structure with heterogeneous, changing topics in documents. The performance of text categorisation relies on the quality of samples, effectiveness of document features, and the topic coverage of categories, depending on the employing strategies; supervised or unsupervised; single labelled or multi-labelled. Attempting to deal with these reliability issues in text categorisation, we propose an unsupervised multi-labelled text categorisation approach that maps the local knowledge in documents to global knowledge in a world ontology to optimise categorisation result.

The conceptual framework of the approach consists of three modules; pattern mining for feature extraction; feature-subject mapping for categorisation; concept generalisation for optimised categorisation. The approach has been promisingly evaluated by compared with typical text categorisation methods, based on the ground truth encoded by human experts.

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ID Code: 61833
Item Type: Conference Paper
Refereed: Yes
Keywords: Text categorisation, Knowledge mapping, Ontology
ISBN: 9781921770227
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2013 Australian Computer Society, Inc.
Deposited On: 14 Aug 2013 23:28
Last Modified: 16 Aug 2013 05:29

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