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» On extremal k-outconnected graphs
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OA
1989
237views Algorithms» more  OA 1989»
13 years 11 months ago
Which Triangulations Approximate the Complete Graph?
nce Abstract) 1 GAUTAM DAS - University of Wisconsin DEBORAH JOSEPH - University of Wisconsin Chew and Dobkin et. al. have shown that the Delaunay triangulation and its variants ar...
Gautam Das, Deborah Joseph
ICDM
2009
IEEE
162views Data Mining» more  ICDM 2009»
14 years 2 months ago
Accurate Estimation of the Degree Distribution of Private Networks
—We describe an efficient algorithm for releasing a provably private estimate of the degree distribution of a network. The algorithm satisfies a rigorous property of differenti...
Michael Hay, Chao Li, Gerome Miklau, David Jensen
WEA
2005
Springer
117views Algorithms» more  WEA 2005»
14 years 27 days ago
Vertex Cover Approximations: Experiments and Observations
The vertex cover problem is a classic NP-complete problem for which the best worst-case approximation ratio is roughly 2. In this paper, we use a collection of simple reductions, e...
Eyjolfur Asgeirsson, Clifford Stein
IPCO
2008
91views Optimization» more  IPCO 2008»
13 years 8 months ago
New Geometry-Inspired Relaxations and Algorithms for the Metric Steiner Tree Problem
Abstract. Determining the integrality gap of the bidirected cut relaxation for the metric Steiner tree problem, and exploiting it algorithmically, is a long-standing open problem. ...
Deeparnab Chakrabarty, Nikhil R. Devanur, Vijay V....
CIKM
2010
Springer
13 years 6 months ago
Building recommendation systems using peer-to-peer shared content
Peer-to-Peer (p2p) networks are used for sharing content by millions of users. Often, meta-data used for searching is missing or wrong, making it difficult for users to find cont...
Yuval Shavitt, Ela Weinsberg, Udi Weinsberg