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JACM
2008
91views more  JACM 2008»
14 years 9 months ago
On the minimization of XPath queries
XML queries are usually expressed by means of XPath expressions identifying portions of the selected documents. An XPath expression defines a way of navigating an XML tree and ret...
Sergio Flesca, Filippo Furfaro, Elio Masciari
JCST
2008
140views more  JCST 2008»
14 years 9 months ago
ROPAS: Cross-Layer Cognitive Architecture for Mobile UWB Networks
The allocation of bandwidth to unlicensed users, without significantly increasing the interference on the existing licensed users, is a challenge for Ultra Wideband (UWB) networks....
Chittabrata Ghosh, Bin Xie, Dharma P. Agrawal
MMS
2008
14 years 9 months ago
Semantic interactive image retrieval combining visual and conceptual content description
We address the challenge of semantic gap reduction for image retrieval through an improved SVM-based active relevance feedback framework, together with a hybrid visual and concept...
Marin Ferecatu, Nozha Boujemaa, Michel Crucianu
ICDE
2006
IEEE
135views Database» more  ICDE 2006»
15 years 11 months ago
Reverse Nearest Neighbors Search in Ad-hoc Subspaces
Given an object q, modeled by a multidimensional point, a reverse nearest neighbors (RNN) query returns the set of objects in the database that have q as their nearest neighbor. I...
Man Lung Yiu, Nikos Mamoulis
KDD
2007
ACM
136views Data Mining» more  KDD 2007»
15 years 10 months ago
Information genealogy: uncovering the flow of ideas in non-hyperlinked document databases
We now have incrementally-grown databases of text documents ranging back for over a decade in areas ranging from personal email, to news-articles and conference proceedings. While...
Benyah Shaparenko, Thorsten Joachims
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