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EDBTW
2006
Springer
15 years 10 months ago
Towards Similarity-Based Topological Query Languages
Abstract. In recent times, the proliferation of spatial data on the Internet is beginning to allow a much larger audience to access and share data currently available in various Ge...
Alberto Belussi, Omar Boucelma, Barbara Catania, Y...
ICDT
2010
ACM
194views Database» more  ICDT 2010»
15 years 8 months ago
Bag Equivalence of XPath Queries
When a query is evaluated under bag semantics, each answer is returned as many times as it has derivations. Bag semantics has long been recognized as important, especially when ag...
Sara Cohen, Yaacov Y. Weiss
ICWS
2009
IEEE
15 years 4 months ago
DHT-Based Range Query Processing for Web Service Discovery
DHTs are scalable, self-organizing, and adaptive to underlying topology changes, thus being a promising infrastructure for realizing efficient Web service discovery. Range queries...
Yiming Zhang, Ling Liu, Dongsheng Li, Feng Liu, Xi...
SIGMOD
2004
ACM
107views Database» more  SIGMOD 2004»
16 years 6 months ago
Static Optimization of Conjunctive Queries with Sliding Windows Over Infinite Streams
We define a framework for static optimization of sliding window conjunctive queries over infinite streams. When computational resources are sufficient, we propose that the goal of...
Ahmed Ayad, Jeffrey F. Naughton
TPDS
2008
120views more  TPDS 2008»
15 years 6 months ago
A New Storage Scheme for Approximate Location Queries in Object-Tracking Sensor Networks
Energy efficiency is one of the most critical issues in the design of wireless sensor networks. Observing that many sensor applications for object tracking can tolerate a certain d...
Jianliang Xu, Xueyan Tang, Wang-Chien Lee