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EDBT
2004
ACM
145views Database» more  EDBT 2004»
14 years 8 months ago
CUBE File: A File Structure for Hierarchically Clustered OLAP Cubes
Abstract. Hierarchical clustering has been proved an effective means for physically organizing large fact tables since it reduces significantly the I/O cost during ad hoc OLAP quer...
Nikos Karayannidis, Timos K. Sellis, Yannis Kouvar...
ICDE
2008
IEEE
137views Database» more  ICDE 2008»
14 years 10 months ago
Efficient Processing of XML Update Streams
This paper introduces a framework for processing continuous, exact queries over continuous update XML streams. Instead of eagerly performing the updates on cached portions of the s...
Leonidas Fegaras
CVPR
2007
IEEE
14 years 10 months ago
A contextual dissimilarity measure for accurate and efficient image search
In this paper we present two contributions to improve accuracy and speed of an image search system based on bag-of-features: a contextual dissimilarity measure (CDM) and an effici...
Herve Jegou, Hedi Harzallah, Cordelia Schmid
PVLDB
2010
133views more  PVLDB 2010»
13 years 7 months ago
RoadTrack: Scaling Location Updates for Mobile Clients on Road Networks with Query Awareness
Mobile commerce and location based services (LBS) are some of the fastest growing IT industries in the last five years. Location update of mobile clients is a fundamental capabil...
Péter Pesti, Ling Liu, Bhuvan Bamba, Arun I...
APPT
2005
Springer
13 years 10 months ago
Probabilistic Continuous Update Scheme in Location Dependent Continuous Queries
It is difficult to maintain the exact location of mobile objects due to the limited resources in a mobile network. A consequence of this problem is that the update cost for a locat...
Song Han, Edward Chan