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edit distances

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06 Aug 2011 (Updated )

Edit distances for strings and key lists (i.e. cell arrays of strings or other elements).

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Description

This package provides implementations of the Levenshtein, Damerau-
Levenshtein, and weighted edit distance for strings as well as key lists
(i.e. cell arrays of strings or arbitrary other elements).

This code is part of the work described in [1]. In [1], edit distances are
applied to match linguistic descriptions that occur when referring to objects
(in order to achieve joint attention in spoken human-robot / human-human
interaction).

  [1] B. Schauerte, G. A. Fink, "Focusing Computational Visual Attention
      in Multi-Modal Human-Robot Interaction," in Proc. ICMI, 2010.

See, http://cvhci.anthropomatik.kit.edu/~bschauer/.

MATLAB release MATLAB 7.9 (R2009b)
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Comments and Ratings (3)
29 Apr 2014 dave

I also get incorrect l-d distances when transpositions are involved. Error is on line 76 of edit_distance_damerau.m, which should read:

d(i-2,j-2) + cost, ...

Note the " + cost" was missing. There is a similar error in the edit_distance_damerau_keylist.m file

19 Aug 2011 forkandwait w

In the transposition part, "d(i-2,j-2)" should be "d(i-1,j-1)", otherwise cumulative costs don't carry forward.

19 Aug 2011 forkandwait w

I get incorrect values for a swap with levenshtein-damerau:

14> edit_distance_damerau('smtih', 'smith')
ans = 0

ans should be 1, with the swapping of "ti"

Otherwise nice code -- I am using it to understand this algorithm

Updates
19 Aug 2011

- bugfix (thanks for the helpful comments of "forkandwait w")

10 Dec 2011

- updated the description

19 Nov 2012

- extended the interface of the cell array functions: now you can use arbitrary compare functions and cell content
- added a simple usage example

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