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» A Useful Undecidable Theory
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INFOCOM
2010
IEEE
13 years 9 months ago
Compressive Sensing Based Positioning Using RSS of WLAN Access Points
Abstract— The sparse nature of location finding problem makes the theory of compressive sensing desirable for indoor positioning in Wireless Local Area Networks (WLANs). In this...
Chen Feng, Wain Sy Anthea Au, Shahrokh Valaee, Zhe...
WWW
2007
ACM
14 years 11 months ago
Just the right amount: extracting modules from ontologies
The ability to extract meaningful fragments from an ontology is key for ontology re-use. We propose a definition of a module that guarantees to completely capture the meaning of a...
Bernardo Cuenca Grau, Ian Horrocks, Yevgeny Kazako...
VLDB
2003
ACM
141views Database» more  VLDB 2003»
14 years 11 months ago
Computing complete answers to queries in the presence of limited access patterns
In data applications such as information integration, there can be limited access patterns to relations, i.e., binding patterns require values to be specified for certain attribut...
Chen Li
PODS
2005
ACM
109views Database» more  PODS 2005»
14 years 11 months ago
XPath satisfiability in the presence of DTDs
We study the satisfiability problem associated with XPath in the presence of DTDs. This is the problem of determining, given a query p in an XPath fragment and a DTD D, whether or...
Michael Benedikt, Wenfei Fan, Floris Geerts
TACAS
2009
Springer
136views Algorithms» more  TACAS 2009»
14 years 5 months ago
Path Feasibility Analysis for String-Manipulating Programs
We discuss the problem of path feasibility for programs manipulating strings using a collection of standard string library functions. We prove results on the complexity of this pro...
Nikolaj Bjørner, Nikolai Tillmann, Andrei V...