Plagiarism detection Yesha Gupta.

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Presentation transcript:

Plagiarism detection Yesha Gupta

String Matching Algorithms: KMP LCSS Rabin-Karp fingerprints an algorithm of choice for multiple pattern search

Testing text file information: 21 Lines Each line(treated as pattern) is of different length Max line size: 370 Minimum line size: 85

LCSS is performing very slow Rabin Karp performed better than KMP Why? Efficient use of Hashing techniques

KMP generated optimum output. Rabin Karp did not. Why? Because of fixed length patterns in a text

Testing text file information: 21 Lines Each line(treated as pattern) is of same length

Result of RabinKarp and KMP is the same Why? Each pattern has same length

Execution time of RabinKarp is slightly better than KMP