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Subtree Sizes in Recursive Trees and Binary Search Trees: Berry–Esseen Bounds and Poisson Approximations

Published online by Cambridge University Press:  01 September 2008

MICHAEL FUCHS
MICHAEL FUCHS*
Affiliation:
Department of Applied Mathematics, National Chiao Tung University, Hsinchu, 300, Taiwan (e-mail: mfuchs@math.nctu.edu.tw)
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Abstract

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We study the number of subtrees on the fringe of random recursive trees and random binary search trees whose limit law is known to be either normal or Poisson or degenerate depending on the size of the subtree. We introduce a new approach to this problem which helps us to further clarify this phenomenon. More precisely, we derive optimal Berry–Esseen bounds and local limit theorems for the normal range and prove a Poisson approximation result as the subtree size tends to infinity.

Information

Type
Paper
Information
Combinatorics, Probability and Computing , Volume 17 , Issue 5 , September 2008 , pp. 661 - 680
Copyright
Copyright © Cambridge University Press 2008

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