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MOR
2010
108views more  MOR 2010»
13 years 6 months ago
Accuracy Certificates for Computational Problems with Convex Structure
The goal of the current paper is to introduce the notion of certificates which verify the accuracy of solutions of computational problems with convex structure; such problems inc...
Arkadi Nemirovski, Shmuel Onn, Uriel G. Rothblum
NETWORKS
2011
13 years 2 months ago
On cut-based inequalities for capacitated network design polyhedra
In this article we study capacitated network design problems. We unify and extend polyhedral results for directed, bidirected and undirected link capacity models. Based on valid i...
Christian Raack, Arie M. C. A. Koster, Sebastian O...
INFOCOM
2003
IEEE
14 years 1 months ago
On Multicast Trees: Structure and Size Estimation
Abstract— This work presents a thorough investigation of the structure of multicast trees cut from the Internet and power-law topologies. Based on both generated topologies and r...
Danny Dolev, Osnat Mokryn, Yuval Shavitt
STOC
2009
ACM
150views Algorithms» more  STOC 2009»
14 years 8 months ago
Integrality gaps for Sherali-Adams relaxations
We prove strong lower bounds on integrality gaps of Sherali?Adams relaxations for MAX CUT, Vertex Cover, Sparsest Cut and other problems. Our constructions show gaps for Sherali?A...
Moses Charikar, Konstantin Makarychev, Yury Makary...
ICIP
2001
IEEE
14 years 9 months ago
Non-sequential video structuring based on video object linking: an efficient tool for video browsing and indexing
An efficient system for unsupervised structuring of stereoscopic sequences is presented in this paper, which generates links between similar VOPs of different shots. Particularly ...
Klimis S. Ntalianis, Nikolaos D. Doulamis, Anastas...