Detecting the origin of text segments efficiently TeX Export

@inproceedings{citeulike:4389866, abstract = {In the origin detection problem an algorithm is given a set S of documents, ordered by creation time, and a query document D. It needs to output for every consecutive sequence of k alphanumeric terms in D the earliest document in \$S\$ in which the sequence appeared (if such a document exists). Algorithms for the origin detection problem can, for example, be used to detect the "origin" of text segments in D and thus to detect novel content in D. They can also find the document from which the author of D has copied the most (or show that D is mostly original.) We concentrate on solutions that use only a fixed amount of memory. We propose novel algorithms for this problem and evaluate them together with a large number of previously published algorithms. Our results show that (1) detecting the origin of text segments efficiently can be done with very high accuracy even when the space used is less than 1\% of the size of the documents in \$S\$, (2) the precision degrades smoothly with the amount of available space, (3) various estimation techniques can be used to increase the performance of the algorithms.}, address = {New York, NY, USA}, author = {Hamid, Ossama A. and Behzadi, Behshad and Christoph, Stefan and Henzinger, Monika}, booktitle = {WWW '09: Proceedings of the 18th international conference on World wide web}, citeulike-article-id = {4389866}, citeulike-linkout-0 = {http://portal.acm.org/citation.cfm?id=1526709.1526719}, citeulike-linkout-1 = {http://dx.doi.org/10.1145/1526709.1526719}, doi = {10.1145/1526709.1526719}, isbn = {978-1-60558-487-4}, keywords = {algorithms, similarity, text}, location = {Madrid, Spain}, pages = {61--70}, posted-at = {2009-04-24 10:22:53}, priority = {5}, publisher = {ACM}, title = {Detecting the origin of text segments efficiently}, url = {http://dx.doi.org/10.1145/1526709.1526719}, year = {2009} }

TY - CONF ID - citeulike:4389866 L3 - citeulike-article-id:4389866 N2 - In the origin detection problem an algorithm is given a set S of documents, ordered by creation time, and a query document D. It needs to output for every consecutive sequence of k alphanumeric terms in D the earliest document in $S$ in which the sequence appeared (if such a document exists). Algorithms for the origin detection problem can, for example, be used to detect the "origin" of text segments in D and thus to detect novel content in D. They can also find the document from which the author of D has copied the most (or show that D is mostly original.) We concentrate on solutions that use only a fixed amount of memory. We propose novel algorithms for this problem and evaluate them together with a large number of previously published algorithms. Our results show that (1) detecting the origin of text segments efficiently can be done with very high accuracy even when the space used is less than 1% of the size of the documents in $S$, (2) the precision degrades smoothly with the amount of available space, (3) various estimation techniques can be used to increase the performance of the algorithms. CY - Madrid, Spain SN - 978-1-60558-487-4 AD - New York, NY, USA EP - 70 TI - Detecting the origin of text segments efficiently PB - ACM T2 - WWW '09: Proceedings of the 18th international conference on World wide web SP - 61 KW - algorithms KW - similarity KW - text AU - Hamid, Ossama AU - Behzadi, Behshad AU - Christoph, Stefan AU - Henzinger, Monika PY - 2009/// UR - http://dx.doi.org/10.1145/1526709.1526719 ER -