Nanchang, China††††††† May 22 - 24, 2009

Nanchang, China††††††† May 22 - 24, 2009

WISA 2009

WISA 2009

Second International Symposium on

Web Information Systems and Applications

Second International Symposium on

Web Information Systems and Applications

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Proceedings of the 2nd International Symposium on Web Information Systems and Applications (WISA 2009)

Nanchang, China, May 22-24, 2009

Editors: Fei Yu, Jiexian Zeng, and Guangxue Yue

AP Catalog Number: AP-PROC-CS-09CN001

ISBN: 978-952-5726-00-8 (Print), 978-952-5726-01-5 (CD-ROM)

Page(s): 434-438

Keyword-based Semantic Retrieval System using Location Information in a Mobile Environment

†††††††††† Tae-Hoon Lee, Jung-Hyun Kim, Hyeong-Joon Kwon and Kwang-Seok Hong

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Abstract

Many services for mobile devices and wireless network have been studied in a Ubiquitous Environment. Mobile information retrieval is crucial to share the vast information and multimedia content. Mobile information retrieval has three challenges; 1) Mobile devices have a small display area. Thus, users are more interested in precision than in recall. 2) Mobile device portability means users frequently change their interest with location. 3) Though wireless development is progressing; its response rate and mobile device processing ability are still lower than for a wired network and PC. To meet these challenges, we propose keyword-based semantic mobile search system using ontology and location information. Through the experiment, we prove that providing the userís selection of the semantic result improved precision. Current location information can be used to provide location-based multimedia content using GPS module and map with mash-up service. Finally, the response rate of the service was demonstrated to be faster through a java-based Lucene engine for keyword-based retrieval module and dividing the result of retrieval.

Index Terms

Mobile Information Retrieval, Semantic Information Retrieval, Location-based Service

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