!Converted with LaTeX2HTML 95.1 (Fri Jan 20 1995) by Nikos Drakos (firstname.lastname@example.org), CBLU, University of Leeds >
Informally, an edit script gives a sequence of edit operations that transforms one tree into another. Formally, we say when is the result of applying the edit operation to . Given a sequence of edit operations, we say if there exist such that . A sequence E of edit operations transforms into if and is isomorphic to . (Recall that two trees are isomorphic if they differ only in the identifiers of their nodes.) We call such a sequence of edit operations an edit script of with respect to . Notice that an edit script does not tell us how the original matching between and should be modified to obtain the total matching between and . This will be done as the edit script is generated; see Section 4.
: Applying the edit script of Example 3.1