Scr

utin

yThomas Chestna

RCOS Summer

2011

Plagia

rism is a Big ProblemComputer

Science is prone to plagiarism due to the ease of

which code can be copied and seemingly altered.

Students copying other students' code

creates gap in their knowledge in higher level CS

courses. Harder to detect plagiarism in

computer code as opposed to written language

due to variable names being arbitrary.

Supports Java, C#,

C, C++, Scheme, and natural language. Looks at

frequency of certain keywords. Free but need to

create an account and be a member of an

educational institute.

Stanf

ord's MossHosted by Stanford

free for non-commercial use. Analyzes

the structure of the program itself.

C, C++, Java, C#, Python, Visual Basic,

Javascript, Fortran, ML, Haskell, Lisp,

Scheme, Pascal, Modula2, Ada, Perl, TCL,

MATLAB, VHDL, Verilog, Spice, Assembly

Languages, and HCL2

Enter

ScrutinyBased off the same concept as

Moss. Will allow for comparison of not just batch

assignments but previous assignments. Allow for

ignoring instructor distributed code while running

comparisons. Able to have a database of open

source projects and projects from other

sources to promote better detection of copied

work.

What

languages will it Support

?ActionScript, Ada, ANTLR,

AppleScript, Assembly, Asymptote, Awk,

Befune, Boo, C, C++, C#, Clojure, CoffeeScri

pt, ColdFusion, Common Lisp, Cython, D,

Delphi, Dylan, Erlang, Factor, Fancy,

Fortran, F#, Gherkin (Cucumber), GL

shaders, Groovy, Haskell, Io, Java, JavaScript,

LLVM, Logtalk, Lua, Matlab, Modula-2,

Objective-C, Objective-J, PHP, Perl,

Prolog, Python, Ruby, S, S-Pus, R, Scala,

Scheme, Smalltalk, Verilog, Visual Basic, and

more.

Where

Is It?At the start of the summer

the code to generate fingerprints for files was

inherited from Rob Escriva. Code to run an

all to all comparison for submitted files. Code

to generate html files with similarities between

documents highlighted.

Where's

it Going?By July 8th

support for ignoring instructor provided code. By

July 22nd a functional database implement

ation will be completed. By the end of the

month support for running against back

assignments will be completed. August will be

spent adding several open source

projects to the database and functionalit

y to be hosted on a server.

Questions?