Title
Phase changes in random m-ary search trees and generalized quicksort
Abstract
We propose a uniform approach to describing the phase change of the limiting distribution of space measures in random m-ary search trees: the space requirement, when properly normalized, is asymptotically normally distributed for m 26 and does not have a xed limit distribution for m > 26. The tools are based on the method of moments and asymptotic solutions of dierential equations, and are applicable to secondary cost measures of quicksort with median-of-(2t + 1) for which the same phase change occurs at t = 58. Both problems are essentially special cases of the generalized quicksort of Hennequin in which a sample of m(t + 1) 1 elements are used to select m 1 equi-spaced ranks that are used in turn to partition the input into m subles.
Year
DOI
Venue
2001
10.1002/rsa.10005
Random Struct. Algorithms
Keywords
Field
DocType
random m-ary search tree,generalized quicksort,phase change
Differential equation,Discrete mathematics,Combinatorics,Normalization (statistics),struct,Quicksort,Partition (number theory),Recursion,Mathematics,Asymptotic distribution,Method of moments (statistics)
Journal
Volume
Issue
ISSN
19
3-4
1042-9832
Citations 
PageRank 
References 
21
1.58
22
Authors
2
Name
Order
Citations
PageRank
Hua-Huai Chern1787.25
Hsien-Kuei Hwang236538.02