QTWN: A Location-Based Query System on Taiwan Maps

With the fast advance of GPS technology and mobile devices, the location-based queries that can provide useful location information for the user have attracted much attention in the database research community. In this paper, we focus on developing a location-based query system, called the QTWN, which provides various queries to retrieve points of interest (POI) on Taiwan maps. The provided queries are classified into the distance-based queries, the attribute-based queries, and the mixed distance/attribute queries. We dedicate to improve the usability of QTWN, design the user-friendly interface, and provide a consistent user experience for all cross-devices.