Plagiarism Detection: new tool for Maastricht University?
Plagiarism Detection: new tool for Maastricht University?
Plagiarism Detection: new tool for Maastricht University?
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<strong>Plagiarism</strong> <strong>Detection</strong>: <strong>new</strong> <strong>tool</strong> <strong>for</strong><br />
<strong>Maastricht</strong> <strong>University</strong>?<br />
Maarten van Wesel<br />
Antoinette Vesseur<br />
Jeroen ten Haaf
Slide 1<br />
j1 Veel te lange tekst<br />
ja.tenhaaf; 14-12-2009
Current situation<br />
Safe Assign (since 2003)<br />
25.000 papers (2009)<br />
(unannounced) downtime<br />
Faculty name
Pilot<br />
Per<strong>for</strong>mance<br />
Usability<br />
Manageability<br />
Faculty name
Two Questions<br />
Is there a suitable product to use<br />
next to Safe Assign?<br />
Is there a suitable product to replace<br />
Safe Assign with?<br />
Faculty name
Why results differ<br />
Difference in Algorithm<br />
Difference in Sources<br />
Faculty name
Assumptions<br />
No false positives<br />
Higher percentage = Better<br />
per<strong>for</strong>mance<br />
Faculty name
Three candidates<br />
Compatible with Blackboard<br />
Ephorus<br />
Turn-it-In<br />
Urkund<br />
Faculty name
Numbers<br />
3,341 papers<br />
Problems<br />
–1,779 papers accepted by all<br />
Faculty name
Two Questions<br />
1. Is there a suitable product to use<br />
next to Safe Assign<br />
– Difference between SA score and<br />
Candidate Score<br />
2. Which product is most suitable to<br />
replace Safe Assign with<br />
– Papers per Threat level ( )<br />
Faculty name
Answering<br />
Question 1<br />
Urkund<br />
vs<br />
Safe Assign<br />
Faculty name
Answering<br />
Question 1<br />
Ephorus<br />
vs<br />
Safe Assign<br />
Faculty name
Answering<br />
Question 1<br />
Turnitin<br />
vs<br />
Safe Assign<br />
Faculty name
Answering Question 1<br />
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Mean SD<br />
Urkund –SA 6.6 25.3<br />
Ephorus –SA 3.5 21.8<br />
Turn-it-in –SA 24.7 21.7
Answering Question 1<br />
Paired sample T-test<br />
–Turn-it-In –SA vs Ephorus –SA;<br />
Faculty name<br />
t(1796) = 50.2, p = .000<br />
–Turn-it-In –SA vs Urkund –SA;<br />
t(1796) = 39.3, p = .000
Answering Question 2<br />
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Answering Question 2<br />
Faculty name
Answering Question 2<br />
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Answering Question 2<br />
Sign Test<br />
–Turn-it-In –Urkund;<br />
Faculty name<br />
z = -34.9, p = .000<br />
–Urkund –Ephorus;<br />
z = -5.8, p = .000<br />
–Turn-it-In –Ephorus<br />
z = -32.0, p = .000
Conclusion<br />
Is there a suitable product to use next<br />
to Safe Assign<br />
–Yes there is, Turn-it-In<br />
Which product is most suitable to<br />
replace Safe Assign with<br />
–Turn-it-In<br />
Faculty name
Questions?<br />
Faculty name
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