In academia Plagiarism means copying of other work without author's permission. Presently available system mainly focuses on software plagiarism. They mainly based on token analysis, linguistic patterns, taxonomy and textual features. In this paper we mainly concentrate on research papers to check whether the documents are plagiarized or not. So far not much work has been done to detect plagiarism in research document. Our work focuses on the similarity of different simple equations present in a document. It can easily extract those equations from the documents, compare them even if the variables are changed in plagiarized document with the original one and can detect if the document is plagiarized or not. This method will not work if the research paper does not contain any equation.
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