Plagiarism refers to “the act of copying materials without
actually acknowledging the original source”. Plagiarism has seen a widespread
activity in the recent times. The increase in the number of materials available now in
the electronic form and the easy access to the internet has increased plagiarism.
Manual detection of plagiarism is not very easy and is time consuming due to the vast
amount of contents available. Techniques are available now which help us to detect
plagiarism. As the amount of programming code being created is increasing,
techniques are available now to detect plagiarism in source code also. Current
research is in the field of development of algorithms that can compare and detect
plagiarism. In this paper a few techniques used in the Plagiarism Detection is shown
along with some tools which are being used
Using Plagiarism Detection Techniques we can compare a given material
with any target material which is either a particular document or in a repository.
Different techniques used in the Plagiarism Detection algorithms are discussed in
detail here. Here I have given more emphasis on source code related plagiarism.
A few case studies show that detection can be done within a large repository. The
efficiency and time of the output depends on the algorithms used.
Plagiarize according to the Merriam-Webster Online Dictionary is
to steal and pass off (the ideas 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 an idea or product derived from an existing
The expression of original ideas is considered intellectual property and is
protected by copyright laws, just like original inventions. Almost all forms of
expression fall under copyright protection as long as they are recorded in some way
(such as a book or a computer file). In other words, plagiarism is an act of fraud. It
involves both stealing someone else's work and lying about it afterward.
The following are considered as plagiarism
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 the sentence structure of a source without
copying so many words or ideas from a source that it makes up the
majority of your work, whether you give credit or not
Plagiarism can be deliberate or accidental.
Deliberate plagiarism is done when a person’s
self esteem is very low. The person, therefore, actually steals the property of
somebody else and claims it to be his own. He might also hire somebody to do his
work. Accidental plagiarism is done when somebody unknowingly cites a phrase or
copies words without acknowledging the author of the material
Plagiarism in all kinds of work has made people to sit and think regarding
the ways to avoid plagiarism. Mainly two methods exist to avoid plagiarism.
A collaborative effort should be made to recognize and to counter
plagiarism at every level.
We should educate students about the appropriate use and
acknowledgement of all forms of intellectual material.
Minimize the possibility of submission of plagiarized content while
not reducing the quality and rigor of assessment.
Installing highly visible procedures for monitoring and detecting
Plagiarism prevention is difficult to achieve and takes a long time to
inculcate but the effects are long term
Plagiarism can be detected manually or with the help of software manual
detection takes more effort. Now the detection Techniques is software programming
methods which are easier, simpler and faster to detect plagiarism