Andrej Bauer a écrit :
> As far as student plagiarism goes, we found out that for Java
> programs, you can pretty much detect frauds by erasing everything from
> the programs except parentheses ( ) { } and then comparing the
> remaining strings for editing distance. My explanation is that
> students who copy code don't want to spend much time on it. In order
> to chance the parenthesis they would have to understand the structure
> of the program, which they don't.

This reminds me of:

  http://www.cs.ucdavis.edu/~su/publications/icse07.pdf


Cheers,

-- 
Stéphane