-
Vaughan, L.: New measurements for search engine evaluation proposed and tested (2004)
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- Source
- Information processing and management. 40(2004) no.4, S.677-691
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Vaughan, L.; Thelwall, M.: Search engine coverage bias : evidence and possible causes (2004)
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- Source
- Information processing and management. 40(2004) no.4, S.693-708
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Vaughan, L.; Chen, Y.: Data mining from web search queries : a comparison of Google trends and Baidu index (2015)
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- Journal of the Association for Information Science and Technology. 66(2015) no.1, S.13-22