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Identification of Duplicate News Stories in Web Pages
March 2008
John Gibson, The MITRE Corporation
Ben Wellner, The MITRE Corporation
Susan Lubar, The MITRE Corporation
ABSTRACT
Identifying near duplicate documents is a challenge often faced in the field of information discovery. Unfortunately many algorithms that find near duplicate pairs of plain text documents perform poorly when used on web pages, where metadata and other extraneous information make that process much more difficult. If the content of the page (e.g., the body of a news article) can be extracted from the page, then the accuracy of the duplicate detection algorithms is greatly increased. Using machine learning techniques to identify the content portion of web pages, we achieve accuracy that is nearly identical to plain text and significantly better than simple heuristic approaches to content extraction. We performed these experiments on a small, but fully annotated corpus.
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