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CORR
2010
Springer
13 years 7 months ago
2010
Springer
We provide the first linear-space data structure with provable sublinear query time for exact point-topoint shortest path queries in planar graphs. We prove that for any planar gr...
ECIR
2009
Springer
14 years 5 months ago
2009
Springer
Understanding the intent underlying user queries may help personalize search results and improve user satisfaction. In this paper, we develop a methodology for using ad clickthroug...
ICDE
2006
IEEE
14 years 1 months ago
2006
IEEE
Due to the flexible structures of SQL, no general approach works efficiently for all kinds of queries. Some special kinds of queries can be further optimized for better performa...
PODS
2007
ACM
14 years 7 months ago
2007
ACM
Query containment has been studied extensively for fragments of
GIS
2003
ACM
14 years 8 months ago
2003
ACM
Nearest neighbor query is one of the most important operations in spatial databases and their application domains, e.g., locationbased services, advanced traveler information syst...