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» On Bounded Queries and Approximation
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TAMC
2009
Springer
15 years 11 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
125
Voted
CPM
2000
Springer
136views Combinatorics» more  CPM 2000»
15 years 9 months ago
Approximating the Maximum Isomorphic Agreement Subtree Is Hard
The Maximum Isomorphic Agreement Subtree (MIT) problem is one of the simplest versions of the Maximum Interval Weight Agreement Subtree method (MIWT) which is used to compare phyl...
Paola Bonizzoni, Gianluca Della Vedova, Giancarlo ...
ECRTS
2004
IEEE
15 years 8 months ago
An Event Stream Driven Approximation for the Analysis of Real-Time Systems
This paper presents a new approach to understand the event stream model. Additionally a new approximation algorithm for the feasibility test of the sporadic and the generalized mu...
Karsten Albers, Frank Slomka
CIAC
2003
Springer
142views Algorithms» more  CIAC 2003»
15 years 8 months ago
Differential Approximation for Some Routing Problems
We study vehicle routing problems with constraints on the distance traveled by each vehicle or on the number of vehicles. The objective is to minimize the total distance traveled b...
Cristina Bazgan, Refael Hassin, Jérôm...
AAAI
2007
15 years 7 months ago
Approximate Counting by Sampling the Backtrack-free Search Space
We present a new estimator for counting the number of solutions of a Boolean satisfiability problem as a part of an importance sampling framework. The estimator uses the recently...
Vibhav Gogate, Rina Dechter