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» Multi-objective Query Processing for Database Systems
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ICDE
2009
IEEE
143views Database» more  ICDE 2009»
15 years 11 months ago
iBroker: An Intelligent Broker for Ontology Based Publish/Subscribe Systems
In this paper, we present iBroker, an Intelligent Broker for ontology based publish/subscribe systems which syntactically and semantically match incoming OWL data to multiple user ...
Myung-Jae Park, Chin-Wan Chung
EDBT
2010
ACM
205views Database» more  EDBT 2010»
15 years 1 months ago
Advanced knowledge discovery on movement data with the GeoPKDD system
The growing availability of mobile devices produces an enormous quantity of personal tracks which calls for advanced analysis methods capable of extracting knowledge out of massiv...
Mirco Nanni, Roberto Trasarti, Chiara Renso, Fosca...
PODS
2007
ACM
151views Database» more  PODS 2007»
15 years 10 months ago
Optimization of continuous queries with shared expensive filters
We consider the problem of optimizing and executing multiple continuous queries, where each query is a conjunction of filters and each filter may occur in multiple queries. When f...
Kamesh Munagala, Utkarsh Srivastava, Jennifer Wido...
EDBT
1998
ACM
155views Database» more  EDBT 1998»
15 years 2 months ago
Improving the Query Performance of High-Dimensional Index Structures by Bulk-Load Operations
Abstract. In this paper, we propose a new bulk-loading technique for high-dimensional indexes which represent an important component of multimedia database systems. Since it is ver...
Stefan Berchtold, Christian Böhm, Hans-Peter ...
SIGMOD
2009
ACM
125views Database» more  SIGMOD 2009»
15 years 10 months ago
Top-k queries on uncertain data: on score distribution and typical answers
Uncertain data arises in a number of domains, including data integration and sensor networks. Top-k queries that rank results according to some user-defined score are an important...
Tingjian Ge, Stanley B. Zdonik, Samuel Madden