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Telling experts from spammers: expertise ranking in folksonomies

Noll, Michael, Au Yeung, Ching Man, Gibbins, Nicholas, Meinel, Christoph and Shadbolt, Nigel (2009) Telling experts from spammers: expertise ranking in folksonomies At Proceedings of the 32nd Annual ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR'09), United States. 19 - 23 Jul 2009. , pp. 612-619. (doi:10.1145/1571941.1572046).

Record type: Conference or Workshop Item (Paper)

Abstract

With a suitable algorithm for ranking the expertise of a user in a collaborative tagging system, we will be able to identify experts and discover useful and relevant resources through them. We propose that the level of expertise of a user with respect to a particular topic is mainly determined by two factors. Firstly, an expert should possess a high quality collection of resources, while the quality of a Web resource depends on the expertise of the users who have assigned tags to it. Secondly, an expert should be one who tends to identify interesting or useful resources before other users do. We propose a graph-based algorithm, SPEAR (SPamming-resistant Expertise Analysis and Ranking), which implements these ideas for ranking users in a folksonomy. We evaluate our method with experiments on data sets collected from Delicious.com comprising over 71,000 Web documents, 0.5 million users and 2 million shared bookmarks. We also show that the algorithm is more resistant to spammers than other methods such as the original HITS algorithm and simple statistical measures.

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More information

Published date: 19 July 2009
Venue - Dates: Proceedings of the 32nd Annual ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR'09), United States, 2009-07-19 - 2009-07-23
Keywords: collaborative tagging, folksonomy, expertise, ranking, spam
Organisations: Web & Internet Science

Identifiers

Local EPrints ID: 267327
URI: http://eprints.soton.ac.uk/id/eprint/267327
ISBN: 978-1-60558-483-6
PURE UUID: 8e4ad102-4aeb-43ce-92a4-184e44a37ca1
ORCID for Nicholas Gibbins: ORCID iD orcid.org/0000-0002-6140-9956

Catalogue record

Date deposited: 04 May 2009 18:44
Last modified: 18 Jul 2017 07:05

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Contributors

Author: Michael Noll
Author: Ching Man Au Yeung
Author: Nicholas Gibbins ORCID iD
Author: Christoph Meinel
Author: Nigel Shadbolt

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