Breakage and restoration in recursive trees

Uniform sequential tree-building aggregation of n particles is analyzed together with the effect of the avalanche that takes place when a subtree rooted at a uniformly chosen vertex is removed. For large n, the expected subtree size is found to be ≃ log n both for the tree of size n and the tree tha...

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Publicado: 2002
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Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219002_v39_n2_p383_Tetzlaff
http://hdl.handle.net/20.500.12110/paper_00219002_v39_n2_p383_Tetzlaff
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Sumario:Uniform sequential tree-building aggregation of n particles is analyzed together with the effect of the avalanche that takes place when a subtree rooted at a uniformly chosen vertex is removed. For large n, the expected subtree size is found to be ≃ log n both for the tree of size n and the tree that remains after an avalanche. Repeated breakage-restoration cycles are seen to give independent avalanches which attain size k (1 ≤ k ≤ n - 1) with probability (k(k + 1))-1 and restored trees that are recursive.