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What is Top-K Most Influential Site Query

Chapter 30
Handbook of Research on Innovations in Database Technologies and Applications: Current and Future Trends
Given a set of sites S, a set of weighted objects O, a spatial region Q and an integer K (K=1), the top-K most influential site query retrieves K sites in Q with the largest influence. Where, the influence of a site s?S is the total weight of objects in O that have s as the nearest site.
Published in Chapter:
Query Processing in Spatial Databases
Antonio Corral (University of Almeria, Spain) and Michael Vassilakopoulos (University of Central Greece, Greece)
Copyright: © 2009 |Pages: 10
DOI: 10.4018/978-1-60566-242-8.ch030
Abstract
Spatial data management has been an active area of intensive research for more than two decades. In order to support spatial objects in a database system several important issues must be taken into account such as: spatial data models, indexing mechanisms and efficient query processing. A spatial database system (SDBS) is a database system that offers spatial data types in its data model and query language and supports spatial data types in its implementation, providing at least spatial indexing and efficient spatial query processing (Güting, 1994). The main reason that has caused the active study of spatial database management systems (SDBMS) comes from the needs of the existing applications such as geographical information systems (GIS), computer-aided design (CAD), very large scale integration design (VLSI), multimedia information systems (MIS), data warehousing, multi-criteria decision making, location-based services, etc.
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