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SODA
2000
ACM
114views Algorithms» more  SODA 2000»
14 years 26 days ago
The rectilinear Steiner arborescence problem is NP-complete
Given a set P of points in the first quadrant, a Rectilinear Steiner Arborescence (RSA) is a directed tree rooted at the origin, containing all points in P, and composed solely of...
Weiping Shi, Chen Su
SODA
2000
ACM
95views Algorithms» more  SODA 2000»
14 years 26 days ago
Towards a theory of cache-efficient algorithms
We present a model that enables us to analyze the running time of an algorithm on a computer with a memory hierarchy with limited associativity, in terms of various cache parameter...
Sandeep Sen, Siddhartha Chatterjee
SODA
2000
ACM
96views Algorithms» more  SODA 2000»
14 years 26 days ago
Improved Steiner tree approximation in graphs
The Steiner tree problem in weighted graphs seeks a minimum weight connected subgraph containing a given subset of the vertices terminals. We present a new polynomial-time heurist...
Gabriel Robins, Alexander Zelikovsky
SODA
2000
ACM
120views Algorithms» more  SODA 2000»
14 years 26 days ago
Minimum ratio canceling is oracle polynomial for linear programming, but not strongly polynomial, even for networks
This paper shows that the minimum ratio canceling algorithm of Wallacher (1989) (and a faster relaxed version) can be generalized to an algorithm for general linear programs with ...
S. Thomas McCormick, Akiyoshi Shioura
SODA
2000
ACM
97views Algorithms» more  SODA 2000»
14 years 26 days ago
Efficient bundle sorting
Yossi Matias, Eran Segal, Jeffrey Scott Vitter
SODA
2000
ACM
99views Algorithms» more  SODA 2000»
14 years 26 days ago
A point-placement strategy for conforming Delaunay tetrahedralization
A strategy is presented to find a set of points which yields a Conforming Delaunay tetrahedralization of a three-dimensional Piecewise-Linear Complex (PLC). This algorithm is nove...
Michael Murphy, David M. Mount, Carl W. Gable
SODA
2000
ACM
85views Algorithms» more  SODA 2000»
14 years 26 days ago
Improved bounds on the sample complexity of learning
We present a new general upper bound on the number of examples required to estimate all of the expectations of a set of random variables uniformly well. The quality of the estimat...
Yi Li, Philip M. Long, Aravind Srinivasan
SODA
2000
ACM
109views Algorithms» more  SODA 2000»
14 years 26 days ago
Approximate congruence in nearly linear time
Piotr Indyk, Suresh Venkatasubramanian
SODA
2000
ACM
127views Algorithms» more  SODA 2000»
14 years 26 days ago
Dimensionality reduction techniques for proximity problems
In this paper we give approximation algorithms for several proximity problems in high dimensional spaces. In particular, we give the rst Las Vegas data structure for (1 + )-neares...
Piotr Indyk