Plagiarism Detection, Types & Tools – Turnitin YouTube Lecture Handouts

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Plagiarism Detection, Types & Tools - Turnitin

What is Included?

  • Steal idea

  • Use production without crediting

  • Commit literary theft

  • Present new idea derived from existing source

  • Failing to quote

It can be deliberate (intentional) or accidental (unintentional)

Detection Technique

Text based – tools

  • PlagAware – online search engine

  • PlagScan – online software with unique signature,

  • – fingerprint based approach,

  • iThenticate -1st online plagiarism checker in 30 languages,

  • – own database

Source code based tools – computer codes (lexical similarities, parse tree, program dependent and metrics).

  • MOSS – measure of software similarity

  • JPlag – compare programs in pairs

  • Code Match

Image of Plagiarism Detection Methods

Image of Plagiarism Detection Methods

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Image of Plagiarism Types

Image of Plagiarism Types

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  • Fingerprint: The sets represent the fingerprints and their elements are called minutiae.

  • A suspicious document is checked for plagiarism by computing its fingerprint and querying minutiae with a precomputed index of fingerprints for all documents of a reference collection.

Image of Degree of obfuscation and difficulty of detection

Image of Degree of Obfuscation and Difficulty of Detection

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Monolingual Plagiarism Detection: This type of detection deals with homogeneous language settings e.g., English-English

  • Intrinsic Plagiarism Detection: This detection approach analyses the writing style or uniqueness of the author

  • Extrinsic Plagiarism Detection: Unlike the intrinsic approach, this approach compares a submitted research article against many other available relevant digital resources in repositories

Cross-Lingual Plagiarism Detection (CLPD): This detection approach is able to perform in heterogeneous language settings e.g., English-Chinese.

Turnitin Software

  • To be used for PhD thesis plagiarism detection

  • Commercial service launched in 1997

  • Turnitin's parent company, iParadigms LLC, runs the informational website and also offers a similar plagiarism-detection service for newspaper editors and book and magazine publishers called iThenticate.

  • Other tools included with the Turnitin suite are GradeMark (online grading and feedback) and Peer Mark (peer-review services).