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Plagiarism detection Yesha Gupta.

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Presentation on theme: "Plagiarism detection Yesha Gupta."— Presentation transcript:

1 Plagiarism detection Yesha Gupta

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

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

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

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

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

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

8 Execution time of RabinKarp is slightly better than KMP


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