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ER
2007
Springer
100views Database» more  ER 2007»
15 years 6 months ago
On Languages for the Specification of Integrity Constraints in Spatial Conceptual Models
This paper intends to classify, review, and compare the existing languages for the specification of spatial integrity constraints at the conceptual level. We classify these languag...
Mehrdad Salehi, Yvan Bédard, Mir Abolfazl M...
GIS
2005
ACM
16 years 23 days ago
ASPEN: an adaptive spatial peer-to-peer network
Geographic Information Systems (GIS) are increasingly managing very large sets of data and hence a centralized data repository may not always provide the most scalable solution. H...
Haojun Wang, Roger Zimmermann, Wei-Shinn Ku
VLDB
2007
ACM
195views Database» more  VLDB 2007»
15 years 12 months ago
Modeling and Querying Vague Spatial Objects Using Shapelets
Research in modeling and querying spatial data has primarily focused on traditional "crisp" spatial objects with exact location and spatial extent. More recent work, how...
Daniel Zinn, Jim Bosch, Michael Gertz
AINA
2007
IEEE
15 years 6 months ago
Grid-Aware Evaluation of Regular Path Queries on Spatial Networks
Regular path queries (RPQs), expressed as regular expressions over the alphabet of database edge-labels, are commonly used for guided navigation of graph databases. While convenie...
Zhuo Miao, Dan C. Stefanescu, Alex Thomo
ANSS
2004
IEEE
15 years 3 months ago
A Spatial Analysis of Mobility Models: Application to Wireless Ad Hoc Network Simulation
We quantatively analyze the differences between a realistic mobility model, TRANSIMS, and several synthetic mobility models. New synthetic models were created by modifying the sta...
D. Charles Engelhart, Anand Sivasubramaniam, Chris...