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TAMC
2009
Springer
14 years 7 months ago
Approximation and Hardness Results for Label Cut and Related Problems
We investigate a natural combinatorial optimization problem called the Label Cut problem. Given an input graph G with a source s and a sink t, the edges of G are classified into ...
Peng Zhang, Jin-yi Cai, Linqing Tang, Wenbo Zhao
TAMC
2009
Springer
14 years 7 months ago
Linear Programming Based Approximation Algorithms for Feedback Set Problems in Bipartite Tournaments
We consider the feedback vertex set and feedback arc set problems in bipartite tournaments. We improve on recent results by giving a 2-approximation algorithm for the feedback vert...
Anke van Zuylen
TAMC
2009
Springer
14 years 7 months ago
On the Tractability of Maximal Strip Recovery
Lusheng Wang, Binhai Zhu
TAMC
2009
Springer
14 years 7 months ago
The Extended Turing Model as Contextual Tool
Computability concerns information with a causal – typically algorithmic – structure. As such, it provides a schematic analysis of many naturally occurring situations. We look ...
S. Barry Cooper
TAMC
2009
Springer
14 years 7 months ago
A Simple Greedy Algorithm for the k-Disjoint Flow Problem
In classical network flow theory the choice of paths, on which flow is sent, is only restricted by arc capacities. This, however, is not realistic in most applications. Many prob...
Maren Martens
TAMC
2009
Springer
14 years 7 months ago
Undecidability of Cost-Bounded Reachability in Priced Probabilistic Timed Automata
Priced Probabilistic Timed Automata (PPTA) extend timed automata with cost-rates in locations and discrete probabilistic branching. The model is a natural combination of Priced Tim...
Jasper Berendsen, Taolue Chen, David N. Jansen
TAMC
2009
Springer
14 years 7 months ago
Best-Order Streaming Model
We study a new model of computation called stream checking on graph problems where a space-limited verifier has to verify a proof sequentially (i.e., it reads the proof as a strea...
Atish Das Sarma, Richard J. Lipton, Danupon Nanong...
TAMC
2009
Springer
14 years 7 months ago
Linear Kernel for Planar Connected Dominating Set
We provide polynomial time data reduction rules for Connected Dominating Set in planar graphs and analyze these to obtain a linear kernel for the planar Connected Dominating Set pr...
Daniel Lokshtanov, Matthias Mnich, Saket Saurabh
TAMC
2009
Springer
14 years 7 months ago
Approximability and Fixed-Parameter Tractability for the Exemplar Genomic Distance Problems
In this paper, we present a survey of the approximability and fixed-parameter tractability results for some Exemplar Genomic Distance problems. We mainly focus on three problems: ...
Binhai Zhu