# Discrete Mathematics & Theoretical Computer Science

## Volume 6 n° 2 (2004), pp. 437-460

author: | Alois Panholzer and Helmut Prodinger |
---|---|

title: | Analysis of some statistics for increasing tree families |

keywords: | increasing trees, Steiner-distance, ancestor-tree size |

abstract: | This paper deals with statistics concerning distances between randomly chosen nodes in varieties of increasing trees. Increasing trees are labelled rooted trees where labels along any branch from the root go in increasing order. Many mportant tree families that have applications in computer science or are used as probabilistic models in various applications, like recursive trees, heap-ordered trees or binary increasing trees (isomorphic to binary search trees) are members of this variety of trees. We consider the parameters depth of a randomly chosen node, distance between two randomly chosen nodes, and the generalisations where p nodes are randomly chosen
Under the restriction that the node-degrees are bounded, we can prove that all these parameters converge in law to the Normal distribution.
This extends results obtained earlier for binary search trees and heap-ordered trees to a much larger class of structures.
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reference: | Alois Panholzer and Helmut Prodinger (2004),
Analysis of some statistics for increasing tree families,
Discrete Mathematics and Theoretical Computer Science 6, pp. 437-460 |

bibtex: | For a corresponding BibTeX entry, please consider our BibTeX-file. |

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Automatically produced on Fri Oct 22 17:07:40 CEST 2004 by falk