See, e.g.:,1287,10464,00.html

Martin C. Carlisle, PhD
Associate Professor and Advisor in Charge
Department of Computer Science
United States Air Force Academy

-----Original Message-----
From: Alan Barnes [mailto:[log in to unmask]]
Sent: Wednesday, July 17, 2002 10:38 AM
To: [log in to unmask]
Subject: Plagarism Detection

Can anyone recommend any software to assist in plagarism detection in Ada 95
programs?  We have around 200 students doing initial programming courses
each submitting 5 programming assignments (a few hundred lines of code each)
over the course of 2 semesters.

In the last two years plagarism has become a major problem.  Generally the
attempts to disguise the copying are not very sophisticated and rarely go
beyond altering comments and identifiers and changing the order of

Occasionally a "pick and mix" strategy is used where students copy
subprograms selected randomly from several different sources. This is
typical in exercises of the form: given a package spec. for an ADT xxxx,
write and test a suitable package body.

Alan Barnes

Dr. Alan Barnes, MInstP, FRAS
Lecturer in Computer Science
Computer Science          Telephone: +44 121 359 3611 Ext. 4663
Aston University          E-Mail:  [log in to unmask]
Aston Triangle            Fax:     +44 121 333 6215
Birmingham B4 7ET         WWW:
U. K.