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CIKM
2011
Springer
14 years 6 months ago
Semantic data markets: a flexible environment for knowledge management
We present Nyaya, a system for the management of Semantic-Web data which couples a general-purpose and extensible storage mechanism with efficient ontology reasoning and querying ...
Roberto De Virgilio, Giorgio Orsi, Letizia Tanca, ...
WWW
2008
ACM
16 years 7 months ago
Geographic web usage estimation by monitoring DNS caches
DNS is one of the most actively used distributed databases on earth, accessed by millions of people every day to transparently convert host names into IP addresses and vice versa....
Hüseyin Akcan, Torsten Suel, Hervé Br&...
SIGMOD
2009
ACM
153views Database» more  SIGMOD 2009»
16 years 6 months ago
ELMR: lightweight mobile health records
Cell phones are increasingly being used as common clients for a wide suite of distributed, database-centric healthcare applications in developing regions. This is particularly tru...
Arvind Kumar, Amey Purandare, Jay Chen, Arthur Mea...
SIGMOD
2003
ACM
125views Database» more  SIGMOD 2003»
16 years 6 months ago
An Optimal and Progressive Algorithm for Skyline Queries
The skyline of a set of d-dimensional points contains the points that are not dominated by any other point on all dimensions. Skyline computation has recently received considerabl...
Dimitris Papadias, Yufei Tao, Greg Fu, Bernhard Se...
SIGMOD
2002
ACM
112views Database» more  SIGMOD 2002»
16 years 6 months ago
Minimal probing: supporting expensive predicates for top-k queries
This paper addresses the problem of evaluating ranked top-? queries with expensive predicates. As major DBMSs now all support expensive user-defined predicates for Boolean queries...
Kevin Chen-Chuan Chang, Seung-won Hwang