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» Redundancy in Spatial Databases
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ICDE
2007
IEEE
173views Database» more  ICDE 2007»
14 years 10 months ago
Accelerating Profile Queries in Elevation Maps
Elevation maps are a widely used spatial data representation in geographical information systems (GIS). Paths on elevation maps can be characterized by profiles, which describe re...
Feng Pan, Wei Wang 0010, Leonard McMillan
ICDE
2003
IEEE
157views Database» more  ICDE 2003»
14 years 10 months ago
Energy Efficient Index for Querying Location-Dependent Data in Mobile Broadcast Environments
We are witnessing in recent years growing interest for location-dependent information services among mobile users. This paper examines the issue of processing locationdependent qu...
Jianliang Xu, Baihua Zheng, Wang-Chien Lee, Dik Lu...
SIGMOD
2004
ACM
140views Database» more  SIGMOD 2004»
14 years 9 months ago
SoundCompass: A Practical Query-by-Humming System
This paper describes our practical query-by-humming system, SoundCompass, which is being used as a karaoke song selection system in Japan. First, we describe the fundamental techn...
Naoko Kosugi, Yasushi Sakurai, Masashi Morimoto
EDBT
2010
ACM
202views Database» more  EDBT 2010»
14 years 3 months ago
Querying trajectories using flexible patterns
The wide adaptation of GPS and cellular technologies has created many applications that collect and maintain large repositories of data in the form of trajectories. Previous work ...
Marcos R. Vieira, Petko Bakalov, Vassilis J. Tsotr...
EDBT
2004
ACM
142views Database» more  EDBT 2004»
14 years 2 months ago
Computing and Handling Cardinal Direction Information
Qualitative spatial reasoning forms an important part of the commonsense reasoning required for building intelligent Geographical Information Systems (GIS). Previous research has c...
Spiros Skiadopoulos, Christos Giannoukos, Panos Va...