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DEXA
2007
Springer
107views Database» more  DEXA 2007»
14 years 14 days ago
When Mobile Objects' Energy Is Not So Tight: A New Perspective on Scalability Issues of Continuous Spatial Query Systems
The two dominant costs in continuous spatial query systems are the wireless communication cost for location update, and the evaluation cost for query processing. Existing works add...
Tai T. Do, Fuyu Liu, Kien A. Hua
CIKM
2005
Springer
14 years 2 months ago
Maximal termsets as a query structuring mechanism
Search engines process queries conjunctively to restrict the size of the answer set. Further, it is not rare to observe a mismatch between the vocabulary used in the text of Web p...
Bruno Pôssas, Nivio Ziviani, Berthier A. Rib...
VLDB
2005
ACM
177views Database» more  VLDB 2005»
14 years 8 months ago
Indexing mobile objects using dual transformations
With the recent advances in wireless networks, embedded systems and GPS technology, databases that manage the location of moving objects have received increased interest. In this ...
George Kollios, Dimitris Papadopoulos, Dimitrios G...
AGP
1997
IEEE
14 years 22 days ago
Safe Folding/Unfolding with Conditional Narrowing
Abstract. Functional logic languages with a complete operational semantics are based on narrowing, a generalization of term rewriting where unification replaces matching. In this ...
María Alpuente, Moreno Falaschi, Giné...
GIS
2007
ACM
14 years 12 days ago
Pipelined spatial join processing for quadtree-based indexes
Spatial join is an important yet costly operation in spatial databases. In order to speed up the execution of a spatial join, the input tables are often indexed based on their spa...
Walid G. Aref