Sciweavers

641 search results - page 87 / 129
» Temporal Queries in OLAP
Sort
View
SIGMOD
2003
ACM
175views Database» more  SIGMOD 2003»
16 years 4 months ago
WinMagic : Subquery Elimination Using Window Aggregation
Database queries often take the form of correlated SQL queries. Correlation refers to the use of values from the outer query block to compute the inner subquery. This is a conveni...
Calisto Zuzarte, Hamid Pirahesh, Wenbin Ma, Qi Che...
VLDB
2007
ACM
109views Database» more  VLDB 2007»
16 years 4 months ago
FluxCapacitor: Efficient Time-Travel Text Search
An increasing number of temporally versioned text collections is available today with Web archives being a prime example. Search on such collections, however, is often not satisfa...
Klaus Berberich, Srikanta J. Bedathur, Thomas Neum...
EDBT
2006
ACM
120views Database» more  EDBT 2006»
16 years 4 months ago
Similarity Search on Time Series Based on Threshold Queries
Similarity search in time series data is required in many application fields. The most prominent work has focused on similarity search considering either complete time series or si...
Johannes Aßfalg, Hans-Peter Kriegel, Peer Kr...
ICDT
2009
ACM
125views Database» more  ICDT 2009»
16 years 4 months ago
How big must complete XML query languages be?
Marx and de Rijke have shown that the navigational core of the w3c XML query language XPath is not first-order complete ? that is it cannot express every query definable in firsto...
Clemens Ley, Michael Benedikt
WWW
2008
ACM
16 years 4 months ago
Supporting anonymous location queries in mobile environments with privacygrid
This paper presents PrivacyGrid - a framework for supporting anonymous location-based queries in mobile information delivery systems. The PrivacyGrid framework offers three unique...
Bhuvan Bamba, Ling Liu, Péter Pesti, Ting W...