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COSIT
1999
Springer
124views GIS» more  COSIT 1999»
13 years 9 months ago
A Predication Calculus for Qualitative Spatial Representations
Spatial information is information bound to spatial entities such as regions. It is based on the spatial structure alone (the valley includes the field) or connects thematic predic...
Carola Eschenbach
SIGMOD
1999
ACM
98views Database» more  SIGMOD 1999»
13 years 9 months ago
Integration of Spatial Join Algorithms for Processing Multiple Inputs
Several techniques that compute the join between two spatial datasets have been proposed during the last decade. Among these methods, some consider existing indices for the joined...
Nikos Mamoulis, Dimitris Papadias
SIGMOD
1999
ACM
125views Database» more  SIGMOD 1999»
13 years 9 months ago
Selectivity Estimation in Spatial Databases
Selectivity estimation of queries is an important and wellstudied problem in relational database systems. In this paper, we examine selectivity estimation in the context of Geogra...
Swarup Acharya, Viswanath Poosala, Sridhar Ramaswa...
DEXAW
1999
IEEE
108views Database» more  DEXAW 1999»
13 years 9 months ago
Towards a Model for Spatio-Temporal Schema Selection
Schema versioning provides a mechanism for handling change in the structure of database systems and has been investigated widely, both in the context of static and temporal databa...
John F. Roddick, Fabio Grandi, Federica Mandreoli,...
DANTE
1999
IEEE
149views Database» more  DANTE 1999»
13 years 9 months ago
Parallel R-Tree Spatial Join for a Shared-Nothing Architecture
The growing importance of spatial data has made it imperative that spatial operations be executed efficiently. The most expensive operation is the join for spatial databases. This...
Lawrence Mutenda, Masaru Kitsuregawa
WISE
2000
Springer
13 years 9 months ago
Searching the Web Using a Map
Most Internet search engines are keyword-based. They are not efficient for the queries where geographical location is important, such as finding hotels within an area or close to ...
Joseph D. Yates, Xiaofang Zhou
VLDB
2001
ACM
146views Database» more  VLDB 2001»
13 years 9 months ago
DB2 Spatial Extender - Spatial data within the RDBMS
Much of the data that we encounter has a spatial (geographic locational) aspect yet this has not been readily exploited by traditional RDBMS. Over the past five years there has be...
David W. Adler
VLDB
2001
ACM
109views Database» more  VLDB 2001»
13 years 9 months ago
Analyzing energy behavior of spatial access methods for memory-resident data
The proliferation of mobile and pervasive computing devices has brought energy constraints into the limelight, together with performance considerations. Energy-conscious design is...
Ning An, Anand Sivasubramaniam, Narayanan Vijaykri...
SSD
2001
Springer
94views Database» more  SSD 2001»
13 years 9 months ago
Selectivity Estimation of Complex Spatial Queries
Several studies have focused on the efficient processing of simple spatial query types such as selections and spatial joins. Little work, however, has been done towards the optimiz...
Nikos Mamoulis, Dimitris Papadias
COSIT
2001
Springer
169views GIS» more  COSIT 2001»
13 years 9 months ago
Spatial Reasoning: No Need for Visual Information
One of the central questions of spatial reasoning research is whether the underlying processes are inherently visual or spatial. The article reports a dual-task experiment that was...
Markus Knauff, Corinne Jola, Gerhard Strube