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ICFP
2003
ACM
16 years 6 months ago
Representing reductions of NP-complete problems in logical frameworks: a case study
Under the widely believed conjecture P=NP, NP-complete problems cannot be solved exactly using efficient polynomial time algorithms. Furthermore, any instance of a NP-complete pro...
Carsten Schürmann, Jatin Shah
TIME
2009
IEEE
16 years 1 months ago
Strong Temporal, Weak Spatial Logic for Rule Based Filters
—Rule-based filters are sequences of rules formed of a condition and a decision. Rules are applied sequentially up to the first fulfilled condition, whose matching decision de...
Roger Villemaire, Sylvain Hallé
TIME
2003
IEEE
15 years 12 months ago
Hybrid Logics on Linear Structures: Expressivity and Complexity
We investigate expressivity and complexity of hybrid logics on linear structures. Hybrid logics are an enrichment of modal logics with certain first-order features which are algo...
Massimo Franceschet, Maarten de Rijke, Bernd-Holge...
ICALP
1994
Springer
15 years 10 months ago
Finding Even Cycles Even Faster
We describe efficient algorithms for finding even cycles in undirected graphs. Our main results are the following: (i) For every k 2, there is an O(V 2) time algorithm that decide...
Raphael Yuster, Uri Zwick
PLDI
1993
ACM
15 years 10 months ago
Dependence-Based Program Analysis
Program analysis and optimizationcan be speeded upthrough the use of the dependence flow graph (DFG), a representation of program dependences which generalizes def-use chains and...
Richard Johnson, Keshav Pingali