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92
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MMDB
2003
ACM
94views Multimedia» more  MMDB 2003»
15 years 5 months ago
Improving image retrieval effectiveness via multiple queries
Conventional approaches to image retrieval are based on the assumption that relevant images are physically near the query image in some feature space. This is the basis of the clu...
Xiangyu Jin, James C. French
ICDE
2000
IEEE
113views Database» more  ICDE 2000»
15 years 5 months ago
Web Query Optimizer
We consider an architecture of mediators and wrappers for Internet accessible WebSources of limited query capability. Each call to a source is a WebSource Implementation (WSI) and...
Vladimir Zadorozhny, Laura Bright, Louiqa Raschid,...
PODS
2012
ACM
297views Database» more  PODS 2012»
13 years 3 months ago
Query-based data pricing
Data is increasingly being bought and sold online, and Webbased marketplace services have emerged to facilitate these activities. However, current mechanisms for pricing data are ...
Paraschos Koutris, Prasang Upadhyaya, Magdalena Ba...
WWW
2011
ACM
14 years 7 months ago
Rewriting queries on SPARQL views
The problem of answering SPARQL queries over virtual SPARQL views is commonly encountered in a number of settings, including while enforcing security policies to access RDF data, ...
Wangchao Le, Songyun Duan, Anastasios Kementsietsi...
112
Voted
FQAS
1998
Springer
133views Database» more  FQAS 1998»
15 years 4 months ago
Estimating the Quality of Databases
Abstract. With more and more electronic information sources becoming widely available, the issue of the quality of these often-competing sources has become germane. We propose a st...
Amihai Motro, Igor Rakov