Web Service Clustering using a Hybrid Term-Similarity Measure with Ontology Learning

Banage T. G. S. Kumara, Incheon Paik, Wuhui Chen and Keun Ho Ryu
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Banage T. G. S. Kumara: School of Computer Science and Engineering, University of Aizu, Aizu-Wakamatsu, Japan
Incheon Paik: School of Computer Science and Engineering, University of Aizu, Aizu-Wakamatsu,Japan
Wuhui Chen: School of Computer Science and Engineering, University of Aizu, Aizu-Wakamatsu, Japan
Keun Ho Ryu: School of Electrical and Computer Engineering, Chungbuk National University, Cheongju, South Korea

International Journal of Web Services Research (IJWSR), 2014, vol. 11, issue 2, 24-45

Abstract: Clustering Web services into functionally similar clusters is a very efficient approach to service discovery. A principal issue for clustering is computing the semantic similarity between services. Current approaches use similarity-distance measurement methods such as keyword, information-retrieval or ontology based methods. These approaches have problems that include discovering semantic characteristics, loss of semantic information and a shortage of high-quality ontologies. In this paper, the authors present a method that first adopts ontology learning to generate ontologies via the hidden semantic patterns existing within complex terms. If calculating similarity using the generated ontology fails, it then applies an information-retrieval-based method. Another important issue is identifying the most suitable cluster representative. This paper proposes an approach to identifying the cluster center by combining service similarity with term frequency–inverse document frequency values of service names. Experimental results show that our term-similarity approach outperforms comparable existing approaches. They also demonstrate the positive effects of our cluster-center identification approach.

Date: 2014
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