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P2P
2007
IEEE
156views Communications» more  P2P 2007»
16 years 25 days ago
Completeness Estimation of Range Queries in Structured Overlays
Range queries are a very powerful tool in a wide range of data management systems and are vital to a multitude of applications. The hierarchy of structured overlay systems can be ...
Marcel Karnstedt, Kai-Uwe Sattler, Roman Schmidt
ICDE
2005
IEEE
172views Database» more  ICDE 2005»
16 years 4 days ago
Monitoring K-Nearest Neighbor Queries Over Moving Objects
Many location-based applications require constant monitoring of k-nearest neighbor (k-NN) queries over moving objects within a geographic area. Existing approaches to this problem...
Xiaohui Yu, Ken Q. Pu, Nick Koudas
WIDM
2003
ACM
15 years 11 months ago
XPath query transformation based on XSLT stylesheets
Whenever XML data must be shared by heterogeneous applications, transformations between different applicationspecific XML formats are necessary. The state-of-the-art method transf...
Sven Groppe, Stefan Böttcher
SIGMOD
1997
ACM
134views Database» more  SIGMOD 1997»
15 years 10 months ago
Similarity-Based Queries for Time Series Data
We study similarity queries for time series data where similarity is defined in terms of a set of linear transformations on the Fourier series representation of a sequence. We ha...
Davood Rafiei, Alberto O. Mendelzon
EDBT
2009
ACM
131views Database» more  EDBT 2009»
15 years 9 months ago
Sample synopses for approximate answering of group-by queries
With the amount of data in current data warehouse databases growing steadily, random sampling is continuously gaining in importance. In particular, interactive analyses of large d...
Philipp Rösch, Wolfgang Lehner