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SIGMOD
2011
ACM
221views Database» more  SIGMOD 2011»
14 years 9 months ago
Scalable query rewriting: a graph-based approach
In this paper we consider the problem of answering queries using views, which is important for data integration, query optimization, and data warehouses. We consider its simplest ...
George Konstantinidis, José Luis Ambite
STOC
2005
ACM
184views Algorithms» more  STOC 2005»
16 years 4 days ago
Coresets in dynamic geometric data streams
A dynamic geometric data stream consists of a sequence of m insert/delete operations of points from the discrete space {1, . . . , ∆}d [26]. We develop streaming (1 + )-approxim...
Gereon Frahling, Christian Sohler
PADL
2010
Springer
16 years 3 months ago
Implementing Query Answering for Hybrid MKNF Knowledge Bases
Abstract. Ontologies and rules are usually loosely coupled in knowledge representation formalisms. In fact, ontologies use open-world reasoning while the leading semantics for rule...
Ana Sofia Gomes, José Júlio Alferes,...
CRV
2006
IEEE
69views Robotics» more  CRV 2006»
16 years 19 days ago
Photometric Stereo with Nearby Planar Distributed Illuminants
This paper considers the problem of shape-from-shading using nearby planar distributed illuminants. It is shown that a rectangular planar nearby distributed uniform isotropic illu...
James J. Clark
JAIR
2010
115views more  JAIR 2010»
15 years 5 months ago
An Investigation into Mathematical Programming for Finite Horizon Decentralized POMDPs
Decentralized planning in uncertain environments is a complex task generally dealt with by using a decision-theoretic approach, mainly through the framework of Decentralized Parti...
Raghav Aras, Alain Dutech