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» Efficient Optimization of Iterative Queries
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DEXA
2008
Springer
113views Database» more  DEXA 2008»
13 years 9 months ago
Optimal Preference Elicitation for Skyline Queries over Categorical Domains
When issuing user-specific queries, users often have a vaguely defined information need. Skyline queries identify the most "interesting" objects for users' incomplet...
Jongwuk Lee, Gae-won You, Seung-won Hwang, Joachim...
CORR
2011
Springer
197views Education» more  CORR 2011»
13 years 2 months ago
Query Expansion Based on Clustered Results
Query expansion is a functionality of search engines that suggests a set of related queries for a user-issued keyword query. Typical corpus-driven keyword query expansion approach...
Ziyang Liu, Sivaramakrishnan Natarajan, Yi Chen
SSDBM
2007
IEEE
107views Database» more  SSDBM 2007»
14 years 1 months ago
Efficient Evaluation of Inbreeding Queries on Pedigree Data
We consider pedigree data structured in the form of a directed acyclic graph, and use an encoding scheme, called NodeCodes, for expediting the evaluation of queries on pedigree gr...
Brendan Elliott, Suleyman Fatih Akgul, Stephen May...
SEMWEB
2010
Springer
13 years 5 months ago
SPARQL Query Optimization on Top of DHTs
We study the problem of SPARQL query optimization on top of distributed hash tables. Existing works on SPARQL query processing in such environments have never been implemented in a...
Zoi Kaoudi, Kostis Kyzirakos, Manolis Koubarakis

Tutorial
905views
15 years 7 months ago
Location-aware Query Processing and Optimization
The wide spread use of cellular phones, handheld devices, and GPS-like technology enables location-aware environments where virtually all objects are aware of their locations. Loca...