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» On set systems with a threshold property
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STOC
2005
ACM
164views Algorithms» more  STOC 2005»
16 years 4 days ago
Cooperative asynchronous update of shared memory
The Write-All problem for an asynchronous shared-memory system has the objective for the processes to update the contents of a set of shared registers, while minimizing the mber o...
Bogdan S. Chlebus, Dariusz R. Kowalski
SIGMOD
2009
ACM
258views Database» more  SIGMOD 2009»
16 years 1 days ago
Continuous obstructed nearest neighbor queries in spatial databases
In this paper, we study a novel form of continuous nearest neighbor queries in the presence of obstacles, namely continuous obstructed nearest neighbor (CONN) search. It considers...
Yunjun Gao, Baihua Zheng
PODS
2008
ACM
152views Database» more  PODS 2008»
15 years 12 months ago
Towards a theory of schema-mapping optimization
A schema mapping is a high-level specification that describes the relationship between two database schemas. As schema mappings constitute the essential building blocks of data ex...
Ronald Fagin, Phokion G. Kolaitis, Alan Nash, Luci...
SEMWEB
2009
Springer
15 years 6 months ago
Towards a Graphical Notation for OWL 2
The Ontology Definition Metamodel (ODM) defines a set of UML metamodels and profiles for development of RDF and OWL. The UML profiles in the ODM specification adapt UML notations t...
Elisa F. Kendall, Roy Bell, Roger Burkhart, Mark D...
SIGCOMM
2009
ACM
15 years 6 months ago
Router primitives for programmable active measurement
Active probe-based measurements are the foundation for understanding important network path properties such as SLA compliance and available bandwidth. Well-known challenges in act...
Joel Sommers, Paul Barford, Mark Crovella