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ICEIS
2009
IEEE
16 years 1 months ago
Creation and Maintenance of Query Expansion Rules
In an information retrieval system, a thesaurus can be used for query expansion, i.e. adding words to queries in order to improve recall. We propose a semi-automatic and interactiv...
Stefania Castellani, Aaron N. Kaplan, Fréd&...
VLDB
2005
ACM
125views Database» more  VLDB 2005»
16 years 2 days ago
Rewriting XPath Queries Using Materialized Views
As a simple XML query language but with enough expressive power, XPath has become very popular. To expedite evaluation of XPath queries, we consider the problem of rewriting XPath...
Wanhong Xu, Z. Meral Özsoyoglu
WIDM
2003
ACM
15 years 12 months ago
XPath query transformation based on XSLT stylesheets
Whenever XML data must be shared by heterogeneous applications, transformations between different applicationspecific XML formats are necessary. The state-of-the-art method transf...
Sven Groppe, Stefan Böttcher
MIS
2001
Springer
148views Multimedia» more  MIS 2001»
15 years 11 months ago
Querying Images in the DISIMA DBMS
Because digital images are not meaningful by themselves, images are often coupled with some descriptive or qualitative data in an image database. Moreover the division of these da...
Vincent Oria, M. Tamer Özsu, Paul Iglinski
CIKM
1999
Springer
15 years 11 months ago
Rule-Based Query Optimization, Revisited
We present the architecture and a performance assessment of an extensible query optimizer written in Venus. Venus is a general-purpose active-database rule language embedded in C+...
Lane Warshaw, Daniel P. Miranker