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Keyword-Based Semantic Retrieval System Using Location Information in a Mobile Environment

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Executive Summary

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. Mobile devices have a small display area. Thus, users are more interested in precision than in recall. Mobile device portability means users frequently change their interest with location. 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, the authors propose keyword-based semantic mobile search system using ontology and location information.

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