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Re: OT: Plagiarism Monitor S/W

On Mon, Feb 10, 2003 at 06:15:15AM +0800, csj@mindgate.net wrote:
> On Sat, 8 Feb 2003 00:04:12 -0200,
> Jeronimo Pellegrini wrote:
> > I know one person who used to teach Compiler Construction. He
> > had a program that parsed the student's compiler, built a
> > syntax tree, and used an algorithm to compare trees. Anything
> > over a certain level would trigger an alarm, *and then he'd
> > check it himself*. Such a tool wouldn't ring the bell if a
> > student had shared a few pieces of code with another -- but
> > it'll certainly catch the guy whose work is mostly copied from
> > someone else (no matter how much he changes in variable names
> > or comments!)
> Probably (the instructor) didn't like Open Source. 

He uses Linux, and advocates it. :-)
But the tests were supposed to be done individually, and two syntax
trees that are too similar usually mean someone cheated. (Copying and
changing variables and comments is not open source development...)


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