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    Results from a web impact factor crawler

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    2001 Results from a Web Impact ...
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    Authors
    Thelwall, Mike
    Issue Date
    2001
    
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    Abstract
    Web impact factors, the proposed web equivalent of impact factors for journals, can be calculated by using search engines. It has been found that the results are problematic because of the variable coverage of search engines as well as their ability to give significantly different results over short periods of time. The fundamental problem is that although some search engines provide a functionality that is capable of being used for impact calculations, this is not their primary task and therefore they do not give guarantees as to performance in this respect. In this paper, a bespoke web crawler designed specifically for the calculation of reliable WIFs is presented. This crawler was used to calculate WIFs for a number of UK universities, and the results of these calculations are discussed. The principal findings were that with certain restrictions, WIFs can be calculated reliably, but do not correlate with accepted research rankings owing to the variety of material hosted on university servers. Changes to the calculations to improve the fit of the results to research rankings are proposed, but there are still inherent problems undermining the reliability of the calculation. These problems still apply if the WIF scores are taken on their own as indicators of the general impact of any area of the Internet, but with care would not apply to online journals.
    Citation
    Journal of Documentation, 57(2): 177-191
    Publisher
    MCB UP Ltd
    URI
    http://hdl.handle.net/2436/3143
    DOI
    10.1108/EUM0000000007081
    Additional Links
    http://www.emeraldinsight.com/10.1108/EUM0000000007081
    Type
    Journal article
    Language
    en
    ISSN
    00220418,00000000
    ae974a485f413a2113503eed53cd6c53
    10.1108/EUM0000000007081
    Scopus Count
    Collections
    Research Institute in Information and Language Processing

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