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» Query Processing Using Ontologies
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IDEAS
1997
IEEE
107views Database» more  IDEAS 1997»
15 years 7 months ago
Query Processing in the ROL system
The ROL system is a novel deductive object-oriented database system that has been implemented at the University of Regina. It provides a uniform rule-based declarative language fo...
Mengchi Liu, Weidong Yu
SEMWEB
2009
Springer
15 years 9 months ago
Task Representation and Retrieval in an Ontology-Guided Modelling System
A modelling procedure consists of a sequence of modelling tasks. With the increasing size of models during the development, the relations among modelling objects and their correspo...
Yuan Ren, Jens Lemcke, Andreas Friesen, Tirdad Rah...
FUIN
2006
139views more  FUIN 2006»
15 years 2 months ago
Efficient Parallel Query Processing by Graph Ranking
In this paper we deal with the problem of finding an optimal query execution plan in database systems. We improve the analysis of a polynomial-time approximation algorithm due to M...
Dariusz Dereniowski, Marek Kubale
DGO
2003
113views Education» more  DGO 2003»
15 years 4 months ago
Resolving Schema and Value Heterogeneities for XML Web Querying
To query XML data over the Web, query engines need to be able to resolve semantic differences between heterogeneous attributes that are conceptually similar. This demo presents a ...
Nancy Wiegand, Naijun Zhou, Stephen J. Ventura, Is...
EJC
2010
14 years 9 months ago
Modelling a Query Space Using Associations
We all use our associative memory constantly. Words and concepts form paths that we can follow to find new related concepts; for example, when we think about a car we may associate...
Mika Timonen, Paula Silvonen, Melissa Kasari