نتایج جستجو برای: random recursive trees

تعداد نتایج: 392516  

Journal: :Combinatorics, Probability & Computing 2021

Abstract We explore the tree limits recently defined by Elek and Tardos. In particular, we find for many classes of random trees. give general theorems three conditional Galton–Watson trees simply generated trees, split generalized (as here), a continuous-time branching process. These results include, example, labelled ordered recursive preferential attachment binary search

2006
MICHAEL DRMOTA

Increasing trees have been introduced by Bergeron, Flajolet and Salvy [1]. This kind of notion covers several well knows classes of random trees like binary search trees, recursive trees, and plane oriented (or heap ordered) trees. We consider the height of increasing trees and prove for several classes of trees (including the above mentioned ones) that the height satisfies EHn ∼ γ logn (for so...

Journal: :Discrete Applied Mathematics 2010
Markus Kuba Alois Panholzer

We study the quantity distance between node j and node n in a random tree of size n chosen from a family of increasing trees. For those subclass of increasing tree families, which can be constructed via a tree evolution process, we give closed formulæ for the probability distribution, the expectation and the variance. Furthermore we derive a distributional decomposition of the random variable c...

Journal: :Discrete Applied Mathematics 2021

We identify the mean growth of independence number random binary search trees and recursive show normal fluctuations around their means. Similarly we also limit laws for domination variations it these two cases tree models. Our results are an application a recent general theorem Holmgren Janson on fringe in

2004
RALPH NEININGER LUDGER RÜSCHENDORF

Limit laws are proven by the contraction method for random vectors of a recursive nature as they arise as parameters of combinatorial structures such as random trees or recursive algorithms, where we use the Zolotarev metric. In comparison to previous applications of this method, a general transfer theorem is derived which allows us to establish a limit law on the basis of the recursive structu...

2015
Cecilia Holmgren Svante Janson

We prove general limit theorems for sums of functions of subtrees of (random) binary search trees and random recursive trees. The proofs use a new version of a representation by Devroye, and Stein’s method for both normal and Poisson approximation together with certain couplings. As a consequence, we give simple new proofs of the fact that the number of fringe trees of size k = kn in the binary...

2003
RALPH NEININGER LUDGER RÜSCHENDORF

Limit laws are proven by the contraction method for random vectors of a recursive nature as they arise as parameters of combinatorial structures such as random trees or recursive algorithms, where we use the Zolotarev metric. In comparison to previous applications of this method, a general transfer theorem is derived which allows us to establish a limit law on the basis of the recursive structu...

2017
Cecilia Holmgren Svante Janson

This survey studies asymptotics of random fringe trees and extended fringe trees in random trees that can be constructed as family trees of a Crump–Mode–Jagers branching process, stopped at a suitable time. This includes random recursive trees, preferential attachment trees, fragmentation trees, binary search trees and (more generally) m-ary search trees, as well as some other classes of random...

2001
Ralph Neininger

Limit laws are proven by the contraction method for random vectors of a recursive nature as they arise as parameters of combinatorial structures such as random trees or recursive algorithms, where we use the Zolotarev metric. In comparison to previous applications of this method a general transfer theorem is derived, which allows to establish a limit law on the basis of the recursive structure ...

2013
Jean Bertoin

We consider a Bernoulli bond percolation on a random recursive tree of size n ≫ 1, with supercritical parameter pn = 1 − c/ lnn for some c > 0 fixed. It is known that with high probability, there exists then a unique giant cluster of size Gn ∼ e−c, and it follows from a recent result of Schweinsberg [22] that Gn has non-gaussian fluctuations. We provide an explanation of this by analyzing the e...

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