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ICPADS
2008
IEEE
16 years 26 days ago
Response Time Constrained Top-k Query Evaluation in Sensor Networks
Existing solutions for top-k queries in wireless sensor networks mainly focused on energy efficiency and little attention has been paid to the response time to answer a top-k que...
Weifa Liang, Baichen Chen, Jeffrey Xu Yu
DLOG
2009
15 years 7 months ago
Tractable Query Answering over Ontologies with Datalog+/-
Abstract. We present a family of expressive extensions of Datalog, called Datalog
Andrea Calì, Georg Gottlob, Thomas Lukasiew...
ACL
2003
15 years 7 months ago
Extracting Key Semantic Terms from Chinese Speech Query for Web Searches
This paper discusses the challenges and proposes a solution to performing information retrieval on the Web using Chinese natural language speech query. The main contribution of th...
Gang Wang, Tat-Seng Chua, Yongcheng Wang
ISSTA
2004
ACM
15 years 12 months ago
Faster constraint solving with subtypes
Constraints in predicate or relational logic can be translated into boolean logic and solved with a SAT solver. For faster solving, it is common to exploit the typing of predicate...
Jonathan Edwards, Daniel Jackson, Emina Torlak, Vi...
DKE
2010
167views more  DKE 2010»
15 years 6 months ago
The consistency extractor system: Answer set programs for consistent query answering in databases
We describe the Consistency Extractor System (ConsEx) that computes consistent answers to Datalog queries with negation posed to relational databases that may be inconsistent with...
Mónica Caniupán Marileo, Leopoldo E....