The program presented here is simple and should be easy to translate into Perl, C or any other reasonable computer language.

A basic knowledge of lisp list processing operators (car, cdr, etc) is all that is required to understand this program, which is written in the Guile dialect of Scheme.

The program analyzes the revision table and uses vandalism reverts as a proxy for vandalism. This relies on the assumption that vandalism is quickly detected and corrected by reverting to an earlier version, and also assumes that administrators do not abuse the rollback facility to perform non-vandalism reverts. It further assumes that editors do not incorrectly label edit warring as vandalism. These assumptions are broadly valid for the article chosen, [[en:George W. Bush]], but may not be true for all popular articles.

The program is configured to work in English, but it may be possible to apply the same methods in other languages by changing the match patterns for vandalism reverts.

Multibyte characters may break this program. Sorry, it isn't my area of expertise.

http://en.wikipedia.org/wiki/User:Tony_Sidaway/Dubya_vandalism