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ALGORITHMICA
2010
72views more  ALGORITHMICA 2010»
13 years 10 months ago
Largest and Smallest Convex Hulls for Imprecise Points
Assume that a set of imprecise points is given, where each point is specified by a region in which the point may lie. We study the problem of computing the smallest and largest pos...
Maarten Löffler, Marc J. van Kreveld
CORR
2008
Springer
110views Education» more  CORR 2008»
13 years 10 months ago
Finding Dense Subgraphs in G(n,1/2)
Finding the largest clique in random graphs is a well known hard problem. It is known that a random graph G(n, 1/2) almost surely has a clique of size about 2 log n. A simple greed...
Atish Das Sarma, Amit Deshpande, Ravi Kannan
DAM
2008
78views more  DAM 2008»
13 years 10 months ago
Semi-preemptive routing on trees
We study a variant of the pickup-and-delivery problem (PDP) in which the objects that have to be transported can be reloaded at most d times, for a given d N. This problem is kno...
Sven Oliver Krumke, Dirk Räbiger, Rainer Schr...
CORR
2006
Springer
87views Education» more  CORR 2006»
13 years 10 months ago
Longest Common Pattern between two Permutations
In this paper, we give a polynomial (O(n8)) algorithm for finding a longest common pattern between two permutations of size n given that one is separable. We also give an algorithm...
Dominique Rossin, Mathilde Bouvel
JC
2007
130views more  JC 2007»
13 years 10 months ago
On the complexity of deciding connectedness and computing Betti numbers of a complex algebraic variety
We extend the lower bounds on the complexity of computing Betti numbers proved in [6] to complex algebraic varieties. More precisely, we first prove that the problem of deciding ...
Peter Scheiblechner