Sciweavers

2850 search results - page 89 / 570
» Answering Queries using Humans, Algorithms and Databases
Sort
View
CAISE
2005
Springer
15 years 7 months ago
Query Processing Using Ontologies
Abstract. Recently, the database and AI research communities have paid increased attention to ontologies. The main motivating reason is that ontologies promise solutions for comple...
Chokri Ben Necib, Johann Christoph Freytag
ICDE
2008
IEEE
215views Database» more  ICDE 2008»
16 years 3 months ago
Fast and Simple Relational Processing of Uncertain Data
This paper introduces U-relations, a succinct and purely relational representation system for uncertain databases. U-relations support attribute-level uncertainty using vertical pa...
Lyublena Antova, Thomas Jansen, Christoph Koch, Da...
GIS
2007
ACM
15 years 5 months ago
Pipelined spatial join processing for quadtree-based indexes
Spatial join is an important yet costly operation in spatial databases. In order to speed up the execution of a spatial join, the input tables are often indexed based on their spa...
Walid G. Aref
VLDB
1997
ACM
86views Database» more  VLDB 1997»
15 years 6 months ago
Using Probabilistic Information in Data Integration
The goal of a mediator system is to provide users a uniform interface to the multitude of information sources. To translate user queries, given in a mediated schema, to queries on...
Daniela Florescu, Daphne Koller, Alon Y. Levy
SIGMOD
2007
ACM
176views Database» more  SIGMOD 2007»
16 years 2 months ago
URank: formulation and efficient evaluation of top-k queries in uncertain databases
Top-k processing in uncertain databases is semantically and computationally different from traditional top-k processing. The interplay between query scores and data uncertainty ma...
Mohamed A. Soliman, Ihab F. Ilyas, Kevin Chen-Chua...