Type-2 fuzzy description logic

Ruixuan LI, Kunmei WEN, Xiwu GU, Yuhua LI, Xiaolin SUN, Bing LI

Front. Comput. Sci. ›› 0

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PDF(191 KB)
Front. Comput. Sci. ›› DOI: 10.1007/s11704-011-0109-8
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Type-2 fuzzy description logic

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Abstract

Description logics (DLs) are widely employed in recent semantic web application systems. However, classical description logics are limited when dealing with imprecise concepts and roles, thus providing the motivation for this work. In this paper, we present a type-2 fuzzy attributive concept language with complements (ALC) and provide its knowledge representation and reasoning algorithms. We also propose type-2 fuzzy web ontology language (OWL) to build a fuzzy ontology based on type-2 fuzzy ALC and analyze the soundness, completeness, and complexity of the reasoning algorithms. Compared to type-1 fuzzy ALC, type-2 fuzzy ALC can describe imprecise knowledge more meticulously by using the membership degree interval. We implement a semantic search engine based on type-2 fuzzy ALC and carry out experiments on real data to test its performance. The results show that the type-2 fuzzy ALC can improve the precision and increase the number of relevant hits for imprecise information searches.

Keywords

description logic (DL) / type-2 fuzzy attributive concept language with complements (ALC) / fuzzy ontology / reasoning / semantic search engine

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Ruixuan LI, Kunmei WEN, Xiwu GU, Yuhua LI, Xiaolin SUN, Bing LI. Type-2 fuzzy description logic. Front Comput Sci Chin, https://doi.org/10.1007/s11704-011-0109-8

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant Nos. 60873225, 60873083, and 70771043), the National High Technology Research and Development Program of China (2007AA01Z403), the Natural Science Foundation of Hubei Province (2009CDB298), the Natural Science Foundation of Hubei Province for Distinguished Young Scholars (2008CDB351), the Wuhan Youth Science and Technology Chenguang Program (200950431171), the Open Foundation of State Key Laboratory of Software Engineering (SKLSE20080718), the Innovation Fund of Huazhong University of Science and Technology (2010MS068, Q2009021).

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2014 Higher Education Press and Springer-Verlag Berlin Heidelberg
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