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Rethinking our approach to plagiarism
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Transcript of Rethinking our approach to plagiarism
@glynnmark
Rethinking our approach plagiarism
Dr Mark Glynn
Dr Shadi Karazi
@glynnmark #heie
Outline
1. Background2. Criteria3. Text Matching
Evaluation4. Next steps
@glynnmark #heie
Text matching evaluation
What are we trying to achieve?
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Overview of use of TurnItIn
Year Originality reports
Grade Mark
2014 26678 31072015 31003 42162016 31735 58972017 23019 3614
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Criteria
Cost Functionality Matching ability
Turnaround time Support
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Support required
Both systems produce a similarity score
23019 reports generated through submissions made to TurnItIn. In that time we had 52 tickets to our helpdesk related to TurnItIn
In the same period we ran 55000+ submissions through Urkund and we had 4 tickets.
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Turn around time
In consistent and unreliable
Plugin related
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Matching Ability
90% of the documents analysed had a difference in similarity scores of less than 10% (with 80% of the documents having less than 5% difference in similarity score).
The differences in the score can be due to three main factors.
Similarity Score
75 – 100% 50 – 74% 25 – 49% 0 – 24%
% of Reports
1.65% 7.67% 27.5% 67.98%
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FunctionalityFeature TurnItIn Moodle +
Urkund
Annotation*Can the lecturer annotate a student’s submission
x x
Marking GuidesStructured feedback on specified criteria with a marks range for each student
x
RubricsIn Built Rubrics
x x
Group work x
Similarity reports x x
Peer Review x x
Rubric / Marking guides reports**Can the lecturer get a report providing a breakdown of all of the marks and comments for each criteria within a rubric/marking guide given to the entire class
x
Audio Feedback x
ExtensionsCan the lecturer grant deadline extensions to one or more students easily
x
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Cost
Year Cost2014 £15,0002015 £23,3022016 £25,247
Urkund - £9158
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Next steps
We terminate TurnItIn in June 2017.
We have developed an audio plugin to facilitate audio feedback similar to TurnItIn.
We get more people buying Urkund to build the database and help us negotiate a better price.