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VLDB
2004
ACM
101views Database» more  VLDB 2004»
14 years 1 months ago
Taming XPath Queries by Minimizing Wildcard Steps
This paper presents a novel and complementary technique to optimize an XPath query by minimizing its wildcard steps. Our approach is based on using a general composite axis called...
Chee Yong Chan, Wenfei Fan, Yiming Zeng
IFIP
1992
Springer
13 years 11 months ago
Intelligent Access to Data and Knowledge Bases via User's Topics of Interest
Retrieving relevant information in Data and Knowledge Bases containing a large number of di erent types of information is a non trivial problem. That is the reason why, in areas l...
Sylvie Cazalens, Robert Demolombe
EDBT
2009
ACM
208views Database» more  EDBT 2009»
14 years 2 months ago
Flexible and efficient querying and ranking on hyperlinked data sources
There has been an explosion of hyperlinked data in many domains, e.g., the biological Web. Expressive query languages and effective ranking techniques are required to convert this...
Ramakrishna Varadarajan, Vagelis Hristidis, Louiqa...
WEBNET
2000
13 years 9 months ago
An Intelligent User Interface oriented to non-expert users
: This paper presents the design criteria for an Intelligent User Interface to a search engine of an on-line document data base. The Interface is aimed at users that have little or...
Fulvio Corno, Laura Farinetti, Giovanni Squillero
AIMSA
2010
Springer
13 years 9 months ago
Expressive Approximations in DL-Lite Ontologies
Abstract. Ontology based data access (OBDA) is concerned with providing access to typically very large data sources through a mediating conceptual layer that allows one to improve ...
Elena Botoeva, Diego Calvanese, Mariano Rodriguez-...