Edit distance between unlabeled ordered trees
نویسندگان
چکیده
منابع مشابه
Edit distance between unlabeled ordered trees
There exists a bijection between one stack sortable permutations –permutations which avoid the pattern 231– and planar trees. We define an edit distance between permutations which is coherent with the standard edit distance between trees. This one-to-one correspondence yields a polynomial algorithm for the subpermutation problem for (231) avoiding permutations. Moreover, we obtain the generatin...
متن کاملO ] 2 7 Ju n 20 05 Edit distance between unlabeled ordered trees
There exists a bijection between one stack sortable permutations –permutations which avoid the pattern 231– and planar trees. We define an edit distance between permutations which is coherent with the standard edit distance between trees. This one-to-one correspondence yields a polynomial algorithm for the subpermutation problem for (231) avoiding permutations. Moreover, we obtain the generatin...
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In this paper, we propose a formal definition of a new class of trees called semiordered trees and a polynomial dynamic programming algorithm to compute a constrained edit distance between such trees. The core of the method relies on a similar approach to compare unordered (K. Zhang, 1996, Algorithmica, 15:205-222) and ordered trees (K. Zhang, 1995, Pattern recognition, 28(3):463-474). The meth...
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An ordered tree is a tree in which each node’s incident edges are cyclically ordered; think of the tree as being embedded in the plane. Let A and B be two ordered trees. The edit distance between A and B is the minimum cost of a sequence of operations (contract an edge, uncontract an edge, modify the label of an edge) needed to transform A into B. We give an O(n logn) algorithm to compute the e...
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ژورنال
عنوان ژورنال: RAIRO - Theoretical Informatics and Applications
سال: 2006
ISSN: 0988-3754,1290-385X
DOI: 10.1051/ita:2006043