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A General Approach to Online Network Optimization Problems Baruch Awerbuch

Summary: A General Approach to Online Network Optimization Problems
Noga Alon
Baruch Awerbuch
Yossi Azar
Niv Buchbinder
Joseph (Seffi) Naor
We study a wide range of online graph and network opti-
mization problems, focusing on problems that arise in the
study of connectivity and cuts in graphs. In a general online
network design problem, we have a communication network
known to the algorithm in advance. What is not known in
advance are the bandwidth or cut demands between nodes in
the network. Our results include an O(log m log n) competi-
tive randomized algorithm for the online non-metric facility
location and for a generalization of the problem called the
multicast problem. In the non-metric facility location m
is the number of facilities and n is the number of clients.
The competitive ratio is nearly tight. We also present an


Source: Alon, Noga - School of Mathematical Sciences, Tel Aviv University
Awerbuch, Baruch - Department of Computer Science, Johns Hopkins University


Collections: Computer Technologies and Information Sciences; Mathematics