This paper investigates a technique to extend the tree edit distance framework to allow the simultaneous matching of multiple tree structures. This approach extends a previous result that showed the edit distance between two trees is completely determined by the maximum tree obtained from both tree with node removal operations only. In our approach we seek the minimum structure from which we ca...

We describe a linear algorithm for comparing two similar ordered rooted trees with node labels. The method for comparing trees is the usual tree edit distance. We show that an optimal mapping which uses at most k insertions or deletions can then be constructed in O(nk) where n is the size of the trees. The approach is inspired by the ZhangShasha algorithm for tree edit distance in combination w...