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Title:
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AUTHORITYRANK: COGNITIVE AUTHORITY AND INFORMATION RETRIEVAL IN THE WEB |
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Author(s):
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Filipe Roseiro Côgo, Sérgio Roberto P. da Silva, Roberto Pereira |
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ISBN:
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978-989-8533-09-8 |
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Editors:
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Bebo White and Pedro Isaías |
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Year:
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2012 |
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Edition:
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Single |
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Keywords:
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AuthorityRank, FolkAuthority, Cognitive Authority, Folksonomy, Information Retrieval. |
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Type:
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Full Paper |
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First Page:
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76 |
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Last Page:
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84 |
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Language:
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English |
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Cover:
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Full Contents:
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click to dowload 
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Paper Abstract:
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This work is set in the context of Web information retrieval. We consider that the use of a ranking scheme that takes into account the cognitive authority of the sources of information provides results of higher relevance and quality to the users. The information overload in Web environments makes the recovery of relevant and quality information a difficult task as users are unable to analyse and interpret a significant part of the information that is available. Several authors correlate the relevance and quality of the information available on the Web with the concept of cognitive authority, stating that entities that have expertise/skill in a particular subject tend to publish information that is of higher quality and relevance. To verify this hypothesis the FolkAuthority approach was adopted and a ranking scheme called AuthorityRank was proposed, based on the prioritization of the categorisation of authorities. An information retrieval system called AuthoritySearch that uses authorityrank was created. The granting of authority among users was simulated on the basis of a real social network, and the authorityrank scheme was compared with the tf-idf scheme using the NDCG metric. The results indicated a statistically significant improvement in the quality and relevance of the information obtained through the use of the authorityrank scheme. |
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