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» Distributed query evaluation on semistructured data
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P2P
2007
IEEE
156views Communications» more  P2P 2007»
15 years 8 months 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
CCS
2008
ACM
15 years 4 months ago
Assessing query privileges via safe and efficient permission composition
We propose an approach for the selective enforcement of access control restrictions in, possibly distributed, large data collections based on two basic concepts: i) flexible autho...
Sabrina De Capitani di Vimercati, Sara Foresti, Su...
MM
2005
ACM
172views Multimedia» more  MM 2005»
15 years 7 months ago
Learning the semantics of multimedia queries and concepts from a small number of examples
In this paper we unify two supposedly distinct tasks in multimedia retrieval. One task involves answering queries with a few examples. The other involves learning models for seman...
Apostol Natsev, Milind R. Naphade, Jelena Tesic
SIGMOD
2004
ACM
199views Database» more  SIGMOD 2004»
16 years 2 months ago
Approximate XML Query Answers
The rapid adoption of XML as the standard for data representation and exchange foreshadows a massive increase in the amounts of XML data collected, maintained, and queried over th...
Neoklis Polyzotis, Minos N. Garofalakis, Yannis E....
SIGIR
2006
ACM
15 years 8 months ago
Load balancing for term-distributed parallel retrieval
Large-scale web and text retrieval systems deal with amounts of data that greatly exceed the capacity of any single machine. To handle the necessary data volumes and query through...
Alistair Moffat, William Webber, Justin Zobel