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» On Bounded Queries and Approximation
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PVLDB
2008
77views more  PVLDB 2008»
14 years 9 months ago
Efficient network aware search in collaborative tagging sites
The popularity of collaborative tagging sites presents a unique opportunity to explore keyword search in a context where query results are determined by the opinion of a network o...
Sihem Amer-Yahia, Michael Benedikt, Laks V. S. Lak...
ISVC
2010
Springer
14 years 8 months ago
Using R-Trees for Interactive Visualization of Large Multidimensional Datasets
Large, multidimensional datasets are difficult to visualize and analyze. Visualization interfaces are constrained in resolution and dimension, so cluttering and problems of project...
Alfredo Giménez, René Rosenbaum, Mar...
SIGMOD
2010
ACM
159views Database» more  SIGMOD 2010»
14 years 8 months ago
Histograms reloaded: the merits of bucket diversity
Virtually all histograms store for each bucket the number of distinct values it contains and their average frequency. In this paper, we question this paradigm. We start out by inv...
Carl-Christian Kanne, Guido Moerkotte
SEMWEB
2010
Springer
14 years 7 months ago
Using SPARQL to Test for Lattices: Application to Quality Assurance in Biomedical Ontologies
We present a scalable, SPARQL-based computational pipeline for testing the lattice-theoretic properties of partial orders represented as RDF triples. The use case for this work is ...
Guo-Qiang Zhang, Olivier Bodenreider
TACAS
2010
Springer
212views Algorithms» more  TACAS 2010»
14 years 7 months ago
Assume-Guarantee Verification for Probabilistic Systems
Abstract. We present a compositional verification technique for systems that exhibit both probabilistic and nondeterministic behaviour. We adopt an assume-guarantee approach to ver...
Marta Z. Kwiatkowska, Gethin Norman, David Parker,...