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» Combinatorial dichotomies in set theory
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CORR
2008
Springer
85views Education» more  CORR 2008»
13 years 8 months ago
Ranking and Unranking of Hereditarily Finite Functions and Permutations
Prolog's ability to return multiple answers on backtracking provides an elegant mechanism to derive reversible encodings of combinatorial objects as Natural Numbers i.e. ranki...
Paul Tarau
MOR
2000
90views more  MOR 2000»
13 years 8 months ago
A PTAS for Minimizing the Total Weighted Completion Time on Identical Parallel Machines
We consider the problem of scheduling a set of n jobs on m identical parallel machines so as to minimize the weighted sum of job completion times. This problem is NP-hard in the s...
Martin Skutella, Gerhard J. Woeginger
STOC
2004
ACM
129views Algorithms» more  STOC 2004»
14 years 8 months ago
Sorting and searching in the presence of memory faults (without redundancy)
We investigate the design of algorithms resilient to memory faults, i.e., algorithms that, despite the corruption of some memory values during their execution, are able to produce...
Irene Finocchi, Giuseppe F. Italiano
FUN
2010
Springer
293views Algorithms» more  FUN 2010»
14 years 1 months ago
Computational Complexity of Two-Dimensional Platform Games
Abstract. We analyze the computational complexity of various twodimensional platform games. We identify common properties of these games that allow us to state several meta-theorem...
Michal Forisek
CP
2009
Springer
14 years 9 months ago
Modelling Equidistant Frequency Permutation Arrays: An Application of Constraints to Mathematics
Equidistant Frequency Permutation Arrays are combinatorial objects of interest in coding theory. A frequency permutation array is a type of constant composition code in which each ...
Sophie Huczynska, Paul McKay, Ian Miguel, Peter Ni...