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SPAA
2004
ACM
14 years 1 months ago
Lower bounds for graph embeddings and combinatorial preconditioners
Given a general graph G, a fundamental problem is to find a spanning tree H that best approximates G by some measure. Often this measure is some combination of the congestion and...
Gary L. Miller, Peter C. Richter
COMCOM
2006
100views more  COMCOM 2006»
13 years 8 months ago
Routing and wavelength assignment for core-based tree in WDM networks
In this paper, we address the routing and wavelength assignment problem for the core-based tree (CBT) service in a wavelength-division-multiplexing (WDM) network, where k sources ...
Jianping Wang, Xiangtong Qi, Mei Yang
IPL
1998
119views more  IPL 1998»
13 years 8 months ago
A 2.5-Factor Approximation Algorithm for the k-MST Problem
The k-MST problem requires finding that subset of at least k vertices of a given graph whose Minimum Spanning Tree has least weight amongst all subsets of at least k vertices. Th...
Sunil Arya, H. Ramesh
JSAC
2006
88views more  JSAC 2006»
13 years 8 months ago
Heuristic algorithms for the routing and wavelength assignment of scheduled lightpath demands in optical networks
This paper addresses the problem of routing and wavelength assignment (RWA) of scheduled lightpath demands (SLDs) in wavelength routed optical networks with no wavelength converter...
Nina Skorin-Kapov
FOCS
2002
IEEE
14 years 1 months ago
Testing Juntas
We consider the problem of testing functions for the property of being a k-junta (i.e., of depending on at most k variables). Fischer, Kindler, Ron, Safra, and Samorodnitsky (J. Co...
Eldar Fischer, Guy Kindler, Dana Ron, Shmuel Safra...