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IPL
2010
119views more  IPL 2010»
14 years 10 months ago
Note on Max Lin-2 above Average
In the Max Lin-2 problem we are given a system S of m linear equations in n variables over F2 in which Equation j is assigned a positive integral weight wj for each j. We wish to ...
Robert Crowston, Gregory Gutin, Mark Jones
TALG
2010
158views more  TALG 2010»
14 years 6 months ago
Clustering for metric and nonmetric distance measures
We study a generalization of the k-median problem with respect to an arbitrary dissimilarity measure D. Given a finite set P of size n, our goal is to find a set C of size k such t...
Marcel R. Ackermann, Johannes Blömer, Christi...
ALENEX
2010
156views Algorithms» more  ALENEX 2010»
15 years 1 months ago
Tabulation Based 5-Universal Hashing and Linear Probing
Previously [SODA'04] we devised the fastest known algorithm for 4-universal hashing. The hashing was based on small pre-computed 4-universal tables. This led to a five-fold i...
Mikkel Thorup, Yin Zhang
ALENEX
2010
163views Algorithms» more  ALENEX 2010»
15 years 1 months ago
Succinct Trees in Practice
We implement and compare the major current techniques for representing general trees in succinct form. This is important because a general tree of n nodes is usually represented i...
Diego Arroyuelo, Rodrigo Cánovas, Gonzalo N...
121
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STOC
2010
ACM
261views Algorithms» more  STOC 2010»
15 years 5 months ago
An Improved LP-based Approximation for Steiner Tree
The Steiner tree problem is one of the most fundamental ÆÈ-hard problems: given a weighted undirected graph and a subset of terminal nodes, find a minimum weight tree spanning ...
Jaroslaw Byrka, Fabrizio Grandoni, Thomas Rothvoss...