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Approximation Schemes for Degree-Restricted MST and Red-Blue Separation Problem

Sanjeev AroraContact Information and Kevin L. ChangContact Information

(5)  Princeton University, Princeton, NJ
(6)  Yale University, New Haven, CT
Abstract
We develop a quasi-polynomial time approximation scheme for the Euclidean version of the Degree-restricted MST by adapting techniques used previously for approximating TSP. Given n points in the plane, d = 2 or 3, and > 0, the scheme finds an approximation with cost within 1 + of the lowest cost spanning tree with the property that all nodes have degree at most d. We also develop a polynomial time approximation scheme for the Euclidean version of the Red-Blue Separation Problem.
Supported by David and Lucille Packard Fellowship, and NSF Grants CCR-0098180 and CCR-009818. Work done partially while visiting the CS Dept at UC Berkeley.

Contact Information Sanjeev Arora
Email: arora@cs.princeton.edu

Contact Information Kevin L. Chang
Email: kevin.chang@yale.edu
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