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» The Maximum Solution Problem on Graphs
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AAIM
2011
Springer
337views Algorithms» more  AAIM 2011»
13 years 9 days ago
On Variants of the Spanning Star Forest Problem
A star forest is a collection of vertex-disjoint trees of depth at most 1, and its size is the number of leaves in all its components. A spanning star forest of a given graph G is ...
Jing He, Hongyu Liang
ADHOCNOW
2008
Springer
14 years 3 months ago
Local Maximal Matching and Local 2-Approximation for Vertex Cover in UDGs
We present 1 − approximation algorithms for the maximum matching problem in location aware unit disc graphs and in growth-bounded graphs. The algorithm for unit disk graph is loc...
Andreas Wiese, Evangelos Kranakis
DISOPT
2007
90views more  DISOPT 2007»
13 years 8 months ago
On the job rotation problem
The job rotation problem (JRP) is the following: Given an n × n matrix A over R ∪ {−∞} and k ≤ n, find a k × k principal submatrix of A whose optimal assignment problem...
Peter Butkovic, Seth Lewis
CORR
2010
Springer
204views Education» more  CORR 2010»
13 years 8 months ago
Optimization Framework and Graph-Based Approach for Relay-Assisted Bidirectional OFDMA Cellular Networks
This paper considers a relay-assisted bidirectional cellular network where the base station (BS) communicates with each mobile station (MS) using orthogonal frequencydivision multi...
Yuan Liu, Meixia Tao, Bin Li, Hui Shen
CORR
2010
Springer
107views Education» more  CORR 2010»
13 years 7 months ago
Maximum Betweenness Centrality: Approximability and Tractable Cases
The Maximum Betweenness Centrality problem (MBC) can be defined as follows. Given a graph find a k-element node set C that maximizes the probability of detecting communication be...
Martin Fink, Joachim Spoerhase