Title
An Exact Solution to the Two-Dimensional Arbitrary-Threshold Density Classification Problem.
Abstract
Density classification is one of the most studied cellular automata problems. As initially presented [5], it does not have an exact solution [7]. However, [2] and [4] demonstrate that a simple change in the proposed accepting condition makes such a solution easily achievable for one-dimensional cellular automata. We show not only that a similar result is possible for two-dimensional cellular automata, but also that this result can be obtained in O(root n) expected running time (where n is the total number of cells in the automaton), compared to an O(n) running time for the one-dimensional case - thus answering an open problem presented in [1]. Our proposed automaton is also capable of classifying arbitrary density thresholds (not just 1/2).
Year
Venue
Keywords
2009
JOURNAL OF CELLULAR AUTOMATA
Cellular automata,arbitrary density classification,majority,two dimensions,rule 184,gravity
Field
DocType
Volume
Exact solutions in general relativity,Applied mathematics,Discrete mathematics,Mathematics
Journal
4
Issue
ISSN
Citations 
3
1557-5969
0
PageRank 
References 
Authors
0.34
0
2
Name
Order
Citations
PageRank
Sami Torbey1173.36
Selim G. Akl22074299.32