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» Generating Satisfiable Problem Instances
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ATVA
2010
Springer
163views Hardware» more  ATVA 2010»
15 years 27 days ago
Automatic Generation of History-Based Access Control from Information Flow Specification
This paper proposes a method for automatically inserting check statements for access control into a given recursive program according to a given security specification. A history-b...
Yoshiaki Takata, Hiroyuki Seki
COCO
2004
Springer
119views Algorithms» more  COCO 2004»
15 years 4 months ago
Tight Lower Bounds for Certain Parameterized NP-Hard Problems
Based on the framework of parameterized complexity theory, we derive tight lower bounds on the computational complexity for a number of well-known NP-hard problems. We start by pr...
Jianer Chen, Benny Chor, Mike Fellows, Xiuzhen Hua...
111
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ATMOS
2010
150views Optimization» more  ATMOS 2010»
14 years 11 months ago
Dynamic Graph Generation and Dynamic Rolling Horizon Techniques in Large Scale Train Timetabling
The aim of the train timetabling problem is to find a conflict free timetable for a set of passenger and freight trains along their routes in an infrastructure network. Several ...
Frank Fischer, Christoph Helmberg
132
Voted
SAC
2003
ACM
15 years 6 months ago
Greedy Heuristics and an Evolutionary Algorithm for the Bounded-Diameter Minimum Spanning Tree Problem
Given a connected, weighted, undirected graph G and a bound D, the bounded-diameter minimum spanning tree problem seeks a spanning tree on G of lowest weight in which no path betw...
Günther R. Raidl, Bryant A. Julstrom
123
Voted
ICALP
2007
Springer
15 years 6 months ago
Universal Algebra and Hardness Results for Constraint Satisfaction Problems
We present algebraic conditions on constraint languages Γ that ensure the hardness of the constraint satisfaction problem CSP(Γ) for complexity classes L, NL, P, NP and ModpL. Th...
Benoit Larose, Pascal Tesson