Title
Combating Web Spam with TrustRank
Abstract
Web spam pages use various techniques to achieve higher-than-deserved rankings in a search en- gine's results. While human experts can identify spam, it is too expensive to manually evaluate a large number of pages. Instead, we propose tech- niques to semi-automatically separate reputable, good pages from spam. We first select a small set of seed pages to be evaluated by an expert. Once we manually identify the reputable seed pages, we use the link structure of the web to discover other pages that are likely to be good. In this paper we discuss possible ways to implement the seed selection and the discovery of good pages. We present results of experiments run on the World Wide Web indexed by AltaVista and evaluate the performance of our techniques. Our results show that we can effectively filter out spam from a sig- nificant fraction of the web, based on a good seed set of less than 200 sites.
Year
Venue
Keywords
2004
VLDB
higher-than-deserved ranking,human expert,small set,reputable seed page,web spam page,good page,combating web spam,seed page,world wide web,seed selection,good seed,indexation,web spam,digital libraries
Field
DocType
ISBN
Web search engine,Data mining,Computer science,Spambot,Content farm,Forum spam,Spam blog,Link farm,World Wide Web,Information retrieval,TrustRank,Database,Spamdexing
Conference
0-12-088469-0
Citations 
PageRank 
References 
561
36.49
5
Authors
3
Search Limit
100561
Name
Order
Citations
PageRank
Zoltán Gyöngyi192667.74
Héctor García-Molina2243595652.13
Jan O. Pedersen363011177.07