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» Algorithms for Secretary Problems on Graphs and Hypergraphs
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ICALP
2009
Springer
14 years 4 months ago
Algorithms for Secretary Problems on Graphs and Hypergraphs
We examine several online matching problems, with applications to Internet advertising reservation systems. Consider an edge-weighted bipartite graph G, with partite sets L, R. We...
Martin Pál, Nitish Korula
SIAMDM
2008
100views more  SIAMDM 2008»
13 years 4 months ago
Tree-Related Widths of Graphs and Hypergraphs
A hypergraph pair is a pair (G, H) where G and H are hypergraphs on the same set of vertices. We extend the definitions of hypertree-width [7] and generalised hypertree-width [8] ...
Isolde Adler
CAIP
2005
Springer
114views Image Analysis» more  CAIP 2005»
13 years 10 months ago
A Segmentation Algorithm for Noisy Images
This paper presents a segmentation algorithm for gray-level images and addresses issues related to its performance on noisy images. It formulates an image segmentation problem as a...
Soufiane Rital, Hocine Cherifi, Serge Miguet
ICALP
2009
Springer
14 years 4 months ago
SDP-Based Algorithms for Maximum Independent Set Problems on Hypergraphs
Abstract. This paper deals with approximations of maximum independent sets in non-uniform hypergraphs of low degree. We obtain the first performance ratio that is sublinear in term...
Elena Losievskaja, Geir Agnarsson, Magnús M...
ACL
1998
13 years 5 months ago
Time Mapping with Hypergraphs
Word graphs are able to represent a large number of different utterance hypotheses in a very compact manner. However, usually they contain a huge amount of redundancy in terms of ...
Jan W. Amtrup, Volker Weber