Sciweavers

JCSS
2010
155views more  JCSS 2010»
13 years 11 months ago
Approximation and fixed-parameter algorithms for consecutive ones submatrix problems
We develop an algorithmically useful refinement of a forbidden submatrix characterization of 0/1-matrices fulfilling the Consecutive Ones Property (C1P). This characterization ...
Michael Dom, Jiong Guo, Rolf Niedermeier
MP
2002
95views more  MP 2002»
14 years 7 days ago
The mathematics of playing golf, or: a new class of difficult non-linear mixed integer programs
We consider a class of non-linear mixed integer programs with n integer variables and k continuous variables. Solving instances from this class to optimality is an NP-hard problem....
Giovanni Rinaldi, Ulrich Voigt, Gerhard J. Woeging...
IPL
2006
105views more  IPL 2006»
14 years 16 days ago
A new approximation algorithm for labeling points with circle pairs
We study the NP-hard problem of labeling points with maximum-radius circle pairs: given n point sites in the plane, find a placement for 2n interior-disjoint uniform circles, such...
Minghui Jiang
CORR
2010
Springer
156views Education» more  CORR 2010»
14 years 20 days ago
A Branch-and-Reduce Algorithm for Finding a Minimum Independent Dominating Set
A dominating set D of a graph G = (V, E) is a subset of vertices such that every vertex in V \ D has at least one neighbour in D. Moreover if D is an independent set, i.e. no verti...
Serge Gaspers, Mathieu Liedloff
FLAIRS
2006
14 years 2 months ago
Tabu Search for a Car Sequencing Problem
The goal of this paper is to propose a tabu search heuristic for the car sequencing problem (CSP) used for the ROADEF 2005 international Challenge. This NP-hard problem was propos...
Nicolas Zufferey, Martin Studer, Edward A. Silver
COCOA
2008
Springer
14 years 2 months ago
Polynomial Time Approximation Scheme for Connected Vertex Cover in Unit Disk Graph
Connected Vertex Cover Problem (CVC) is an NP-hard problem. The currently best known approximation algorithm for CVC has performance ration 2. This paper gives the first Polynomial...
Zhao Zhang, Xiaofeng Gao, Weili Wu
GD
2006
Springer
14 years 4 months ago
Computing Geometric Minimum-Dilation Graphs Is NP-Hard
We prove that computing a geometric minimum-dilation graph on a given set of points in the plane, using not more than a given number of edges, is an NP-hard problem, no matter if ...
Rolf Klein, Martin Kutz
PARA
2004
Springer
14 years 6 months ago
New Algorithms for Statistical Analysis of Interval Data
It is known that in general, statistical analysis of interval data is an NP-hard problem: even computing the variance of interval data is, in general, NP-hard. Until now, only one ...
Gang Xiang, Scott A. Starks, Vladik Kreinovich, Lu...
MFCS
2004
Springer
14 years 6 months ago
Crossing Number Is Hard for Cubic Graphs
It was proved by [Garey and Johnson, 1983] that computing the crossing number of a graph is an NP-hard problem. Their reduction, however, used parallel edges and vertices of very h...
Petr Hlinený
EVOW
2007
Springer
14 years 6 months ago
Generation of Tree Decompositions by Iterated Local Search
Many instances of NP-hard problems can be solved efficiently if the treewidth of their corresponding graph is small. Finding the optimal tree decompositions is an NP-hard problem a...
Nysret Musliu