SODA
2003
ACM
14 years 1 months ago
2003
ACM
The natural relaxation for the Group Steiner Tree problem, as well as for its generalization, the Directed Steiner Tree problem, is a flow-based linear programming relaxation. We...
SODA
2003
ACM
14 years 1 months ago
2003
ACM
In a recent paper, Ajtai et al. [1] give a streaming algorithm to count the number of inversions in a stream Ä ¾ Ñ Ò using two passes and Ç´¯ ½ ÔÒÐÓ Ò´ÐÓ Ñ·ÐÓ...
SODA
2003
ACM
14 years 1 months ago
2003
ACM
We give a simple algorithm for the MINIMUM DIRECTED MULTICUT problem, and show that it gives an Ç´ÔÒµapproximation. This improves on the previous approximation guarantee of ...
SODA
2003
ACM
14 years 1 months ago
2003
ACM
Zonotopes are centrally symmetric polytopes with a very special structure: they are the Minkowski sum of line segments. In this paper we propose to use zonotopes as bounding volum...
SODA
2003
ACM
14 years 1 months ago
2003
ACM
SODA
2003
ACM
14 years 1 months ago
2003
ACM
Previous work on the partial Latin square extension (PLSE) problem resulted in a 2-approximation algorithm based on the LP relaxation of a three-dimensional assignment IP formulat...
SODA
2003
ACM
14 years 1 months ago
2003
ACM
We introduce the following consensus estimate problem. Several processors hold private and possibly different lower bounds on a value. The processors do not communicate with each ...
SODA
2003
ACM
14 years 1 months ago
2003
ACM
We consider the problem of finding efficient trees to send information from k sources to a single sink in a network where information can be aggregated at intermediate nodes in t...
SODA
2003
ACM
14 years 1 months ago
2003
ACM
SODA
2003
ACM
14 years 1 months ago
2003
ACM