Sciweavers

373 search results - page 6 / 75
» Querying Priced Information in Databases: The Conjunctive Ca...
Sort
View
83
Voted
KDD
2000
ACM
140views Data Mining» more  KDD 2000»
15 years 1 months ago
Effective Retrieval of Audio Information from Annotated Text Using Ontologies
To improve the accuracy in terms of precision and recall of an audio information retrieval system we have created a domainspecific ontology (a collection of key concepts and their...
Latifur Khan, Dennis McLeod
COOPIS
1994
IEEE
15 years 1 months ago
Query Translation Supporting the Migration of Legacy Databases into Cooperative Information Systems
In this paper, we present a query translation algorithm which allows object-oriented queries to be automatically translated into a relational query language. Our goal is to provid...
Daniel A. Keim, Hans-Peter Kriegel, Andreas Mieths...
DAGSTUHL
1998
14 years 11 months ago
A Practical Approach to Hypothetical Database Queries
Hypothetical queries are queries embedding hypotheses about the database. The embedded hypothesis in a hypothetical query indicates, so to say, a state of the database intended for...
Henning Christiansen, Troels Andreasen
VLDB
2001
ACM
151views Database» more  VLDB 2001»
15 years 9 months ago
Approximate query mapping: Accounting for translation closeness
Abstract In this paper we present a mechanism for approximately translating Boolean query constraints across heterogeneous information sources. Achieving the best translation is ch...
Kevin Chen-Chuan Chang, Hector Garcia-Molina
ICDT
2011
ACM
242views Database» more  ICDT 2011»
14 years 1 months ago
Knowledge compilation meets database theory: compiling queries to decision diagrams
The goal of Knowledge Compilation is to represent a Boolean expression in a format in which it can answer a range of online-queries in PTIME. The online-query of main interest to ...
Abhay Kumar Jha, Dan Suciu