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2013 Expected conflicts in pairs of rooted binary trees
Timothy Chu, Sean Cleary
Involve 6(3): 323-332 (2013). DOI: 10.2140/involve.2013.6.323


Rotation distance between rooted binary trees measures the extent of similarity of two trees with ordered leaves. There are no known polynomial-time algorithms for computing rotation distance. If there are common edges or immediately changeable edges between a pair of trees, the rotation distance problem breaks into smaller subproblems. The number of crossings or conflicts of a tree pair also gives some measure of the extent of similarity of two trees. Here we describe the distribution of common edges and immediately changeable edges between randomly selected pairs of trees via computer experiments, and examine the distribution of the amount of conflicts between such pairs.


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Timothy Chu. Sean Cleary. "Expected conflicts in pairs of rooted binary trees." Involve 6 (3) 323 - 332, 2013.


Received: 26 June 2012; Revised: 22 October 2012; Accepted: 23 October 2012; Published: 2013
First available in Project Euclid: 20 December 2017

zbMATH: 1274.05066
MathSciNet: MR3101764
Digital Object Identifier: 10.2140/involve.2013.6.323

Primary: 05C05 , 68P05

Keywords: random binary tree pairs

Rights: Copyright © 2013 Mathematical Sciences Publishers


Vol.6 • No. 3 • 2013
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