Winnowing wheat from the chaff: propagating trust to sift spam from the web

Authors:
Lan Nie;Baoning Wu;Brian D. Davison
Affiliations:
Lehigh University, Bethlehem, PA;Lehigh University, Bethlehem, PA;Lehigh University, Bethlehem, PA
Venue:
SIGIR '07 Proceedings of the 30th annual international ACM SIGIR conference on Research and development in information retrieval
Year:
2007

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Abstract

The Web today includes many pages intended to deceive search engines, and attain an unwarranted result ranking. Since the links among web pages are used to calculate authority, ranking systems would benefit from knowing which pages contain content to be trusted and which do not. We propose and compare various trust propagation methods to estimate the trustworthiness of each page. We find that a non-trust-preserving propagation method is able to achieve close to a fifty percent improvement over TrustRank in separating spam from non-spam pages.