The Technology of Plagiarism and Plagiarism Detection

The Technology of A 30-Year Game of Cat and Mouse Plagiarism and Detection

My Video

Limitations of this Talk

A Human Problem

6000 Years of Recorded History

Statute of Anne in 1709

The Romantic Era (Late 18th - Early 19th Century) Joseph Vernet - Shipwreck 1759

Larry Tesler - The Inventor of Cut, Copy and Paste (1980) By: Yodel Anecdotal - http://www.ﬂickr.com/photos/99527366@N00/889158887/

Xerox Alto

Cut, Copy and Paste

The Previous Method

Plagiarism As a Shortcut

The Two Kinds of Plagiarism

Not What the Internet is For

Just Google It

An Example Article Spinner

The cat ran into the house

Cat Ran House Feline Dashed Home Calico Rushed Building Kitty Raced Abode Tabby Galloped Flat Kitten Sped Roost

5 x 5 x 5 = 125 Iterations 6 x 6 x 6 = 216 Iterations

+ What an Article Spinner Really Is

The Tabby Galloped Into the Roost

The Calico Rushed Into the Abode

Article Generator

What Article Generators Create

John Barrie, Creator of Turnitin

The Most Popular Tool

Sample Turnitin Report

Sources Turnitin Checks • The Web (13.5 Billion Pages) • 8-Year Archive of the Web • 26 Million Scholarly Articles (via CrossCheck) • At Least 2 Million Additional Articles • 135 Million Student Papers

The Power of Fingerprinting

The Macro Case

e vs. ë

So Who is Winning

1 0.75 % Words Changed Plagiarism Threshold 0.5 0.25 0 0 20 40 60 80 100 Approximate Relationship for Word Substitution

1 % A Added to B Plagiarism Threshold 0.75 0.5 0.25 0 0 20 40 60 80 100 Approximate Relationship for Content Addition/Mixing

On the Other Side of the Coin...

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The Technology of Plagiarism and Plagiarism Detection

by Plagiarism Today on Nov 04, 2010

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