Sciweavers

3652 search results - page 185 / 731
» A study of query length
Sort
View
GLOBECOM
2006
IEEE
14 years 2 months ago
Evaluation of Dynamic Query Abolishment Methods in Heterogeneous Networks
ā€” We compare the performance of various dynamic query abolishment mechanisms in different unstructured overlay network topologies such as found in several P2P systems. We speciļ¬...
Elena Meshkova, Janne Riihijärvi, Petri M&aum...
ATAL
2004
Springer
14 years 1 months ago
QueryTracker: An Agent for Tracking Persistent Information Needs
Most people have long term information interests. Current Web search engines satisfy immediate information needs. Speciļ¬c sites support tracking of long term interests. We prese...
Gabriel Somlo, Adele E. Howe
ER
2004
Springer
103views Database» more  ER 2004»
14 years 1 months ago
Querying Heterogeneous Spatial Databases: Combining an Ontology with Similarity Functions
This paper uses a knowledge-based approach to querying heterogeneous spatial databases based on an ontology and conceptual and attribute similarities. The ontology, which may be in...
Mariella Gutiérrez, M. Andrea Rodríg...
ICDT
2003
ACM
121views Database» more  ICDT 2003»
14 years 1 months ago
Deciding Termination of Query Evaluation in Transitive-Closure Logics for Constraint Databases
We study extensions of ļ¬rst-order logic over the reals with diļ¬€erent types of transitive-closure operators as query languages for constraint databases that can be described by...
Floris Geerts, Bart Kuijpers
ICDT
2001
ACM
153views Database» more  ICDT 2001»
14 years 18 days ago
Estimating Range Queries Using Aggregate Data with Integrity Constraints: A Probabilistic Approach
In fast OLAP applications it is often advantageous to provide approximate answers to range queries in order to achieve very high performances. A possible solution is to inquire sum...
Francesco Buccafurri, Filippo Furfaro, Domenico Sa...