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Malarkodi S
Assistant Professor
AIIMS, Rishikesh
Plagiarism

Contents
1
 Introduction
 Definition of Plagiarism
 Avoiding plagiarism
 Tools used for text based plagiarism
 Disadvantages of the plagiarism detection
technology
 Conclusion
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Introduction
o Plagiarism: The representation of another’s work as
one’s own.
o It is serious problem for academics now a days.
o In computing courses, students often plagiarize
various assignments.
o Usually they may copy it from their friends or web.
o Manual comparison is rather impractical or difficult
too.
literary theft

Definition of Plagiarism
3
Plagiarize according to the Merriam-Webster
Online dictionary is:
To steal and pass off the idea or words of another
as one’s own.
 To use another’s production without crediting the
source
 To commit literary theft
 To present as new and original idea or product
derived from an existing source.
https://www.youtube.com/watch?v=OKmtC
1oiOzU

What is Plagiarism:
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 Turning in someone else’s work as your own.
 Copying words or ideas from someone else
without giving credit.
 Failing to put a quotation in quotation marks
 Giving incorrect information about the source
of a quotation.
 Changing words but copying sentence structure.
 Copying so many words or ideas from a source
that it makes up the majority of your work,
even though by credit.
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Its Simple

Plagiarism
The Internet has made it easier for
students to plagiarize.

WHAT DOES PLAGIARISM LOOK
LIKE?
▶Copying someone’s work
Citing a source improperly
▶ Failure to cite a source
▶ Creation of false sources
▶ Turning in
another
person’s work as
your own

Types Plagiarism
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Malarkodi S
Steals the property of somebody else and claims
it to be his own.
Somebody unknowingly cites a phrase or
copies words without acknowledging the
author of the material.
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Avoiding plagiarism
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Malarkodi S
Two methods :
 Plagiarism prevention
 Plagiarism detection
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Plagiarism Prevention
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 Collaborative effort for recognize and counter
plagiarism at every level.
 Educate authors about the appropriate use of
intellectual material.
 Minimize the possibility of submission of
plagiarized content.
 Plagiarism prevention is difficult to achieve &
also take a long time.
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Plagiarism Detection
Culwin and Lancaster’s four stages of
detecting plagiarism:
9
Plagiarism Detection Techniques

Tools used for text based plagiarism
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Malarkodi S
Some tools are:
 PlagAware
 PlagScan
 CheckForPlagiarism.net
 iThenticate
 Turnitin
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What is an acceptable percentage of
plagiarism?
• However, contrary to popular belief, plagiarism checkers do
not detect plagiarism, but similarities.
• Properly cited quotes,
• In-text citations or your reference list, and
• Commonly used phrases that are obviously not considered
plagiarism.
Because of this, you can generally follow these guidelines:
o A score higher than 10% is troublesome.
o A score between 5% and 10% it is not bad per se.
o A score around 5% is reasonable.

Examples of penalty for plagiarism:
o In 2002, Prof. David Monash, rector of Monash
University(Australia), was caught citing some
paragraphs without sources in his books published
in 1970s. He then resigned to maintain his
institution’s reputation.
o In 2004, Prof. Sultan, professor of Immunology of
Harvard University, was accused of plagiarizing from
four papers. Consequently, he was banned from
reviewing papers for3years

Conclusion
Plagiarism Detection Techniques 39
 Plagiarism is rampant now. With most of
the data available to us in digital format
the venues for plagiarism is opening up.
 To avoid this kind of cheating and to
acknowledge the originality of the author
new detection techniques are to be created.
 To protect the intellectual property source
code new techniques are to be developed
and implemented.

References
 http://www.ijirae.com/volumes/vol1/issue7/AUCS10085.
06.pdf
 http://dspace.cusat.ac.in/jspui/bitstream/123456789/3618/
1/PDT.pdf
 http://elearningindustry.com/top-10-free-plagiarism-
detection-tools-for-teachers
 http://www.plagiarism.org/plagiarism-101/what-is-
plagiarism/
 http://www.cs.uu.nl/research/techreps/repo/CS2010/2010-
015.Pdf
 https://en.wikipedia.org/wiki/Category:Plagiarism_detecto
rs
Plagiarism Detection Techniques 39

Plagiarism Detection T
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