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» Complexity of Graph Covering Problems
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WIDM
2003
ACM
14 years 2 months ago
Query rewriting using views in the presence of inclusion dependencies
Query rewriting using views is an essential issue in data integration. A number of algorithms, e.g., the bucket algorithm, the inverse rules algorithm, the SVB algorithm and the M...
Qingyuan Bai, Jun Hong, Michael F. McTear
SIAMCOMP
1998
125views more  SIAMCOMP 1998»
13 years 8 months ago
Free Bits, PCPs, and Nonapproximability-Towards Tight Results
This paper continues the investigation of the connection between probabilistically checkable proofs (PCPs) and the approximability of NP-optimization problems. The emphasis is on p...
Mihir Bellare, Oded Goldreich, Madhu Sudan
NAACL
2007
13 years 10 months ago
Worst-Case Synchronous Grammar Rules
We relate the problem of finding the best application of a Synchronous ContextFree Grammar (SCFG) rule during parsing to a Markov Random Field. This representation allows us to u...
Daniel Gildea, Daniel Stefankovic
NETWORKS
2010
13 years 7 months ago
Network flow spanners
Abstract. In this paper, motivated by applications of ordinary (distance) spanners in communication networks and to address such issues as bandwidth constraints on network links, l...
Feodor F. Dragan, Chenyu Yan
ECCV
2004
Springer
14 years 10 months ago
Interactive Image Segmentation Using an Adaptive GMMRF Model
The problem of interactive foreground/background segmentation in still images is of great practical importance in image editing. The state of the art in interactive segmentation is...
Andrew Blake, Carsten Rother, M. Brown, Patrick P&...