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GECCO
2003
Springer
107views Optimization» more  GECCO 2003»
14 years 25 days ago
A Possible Mechanism of Repressing Cheating Mutants in Myxobacteria
The formation of fruiting bodies by myxobacteria colonies involves altruistic suicide by many individual bacteria and is thus vulnerable to exploitation by cheating mutants. We rep...
Ying Xiao, Winfried Just
ICALP
2003
Springer
14 years 24 days ago
Fixed-Parameter Algorithms for the (k, r)-Center in Planar Graphs and Map Graphs
The (k, r)-center problem asks whether an input graph G has ≤ k vertices (called centers) such that every vertex of G is within distance ≤ r from some center. In this paper we ...
Erik D. Demaine, Fedor V. Fomin, Mohammad Taghi Ha...
STOC
2010
ACM
295views Algorithms» more  STOC 2010»
14 years 14 days ago
Approximation Schemes for Steiner Forest on Planar Graphs and Graphs of Bounded Treewidth
We give the first polynomial-time approximation scheme (PTAS) for the Steiner forest problem on planar graphs and, more generally, on graphs of bounded genus. As a first step, w...
MohammadHossein Bateni, MohammadTaghi Hajiaghayi a...
ICALP
2001
Springer
14 years 2 days ago
Approximating the Minimum Spanning Tree Weight in Sublinear Time
We present a probabilistic algorithm that, given a connected graph G (represented by adjacency lists) of average degree d, with edge weights in the set {1, . . . , w}, and given a ...
Bernard Chazelle, Ronitt Rubinfeld, Luca Trevisan
LPAR
2001
Springer
14 years 1 days ago
Boolean Functions for Finite-Tree Dependencies
Several logic-based languages, such as Prolog II and its successors, SICStus Prolog and Oz, offer a computation domain including rational trees. Infinite rational trees allow fo...
Roberto Bagnara, Enea Zaffanella, Roberta Gori, Pa...