Search (17 results, page 1 of 1)

  • × author_ss:"Bar-Ilan, J."
  • × year_i:[2000 TO 2010}
  1. Bar-Ilan, J.: Comparing rankings of search results on the Web (2005) 0.01 
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    Abstract
    The Web has become an information source for professional data gathering. Because of the vast amounts of information on almost all topics, one cannot systematically go over the whole set of results, and therefore must rely on the ordering of the results by the search engine. It is well known that search engines on the Web have low overlap in terms of coverage. In this study we measure how similar are the rankings of search engines on the overlapping results. We compare rankings of results for identical queries retrieved from several search engines. The method is based only on the set of URLs that appear in the answer sets of the engines being compared. For comparing the similarity of rankings of two search engines, the Spearman correlation coefficient is computed. When comparing more than two sets Kendall's W is used. These are well-known measures and the statistical significance of the results can be computed. The methods are demonstrated on a set of 15 queries that were submitted to four large Web search engines. The findings indicate that the large public search engines on the Web employ considerably different ranking algorithms.
  2. Bar-Ilan, J.: Information hub blogs (2005) 0.01 
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  3. Bar-Ilan, J.; Gutman,T.: How do search engines respond to some non-English queries? (2005) 0.01 
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  4. Bar-Ilan, J.: Methods for measuring search engine performance over time (2002) 0.00 
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  5. Bar-Ilan, J.: Evaluating the stability of the search tools Hotbot and Snap : a case study (2000) 0.00 
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  6. Bar-Ilan, J.; Peritz, B.C.: Evolution, continuity, and disappearance of documents on a specific topic an the Web : a longitudinal study of "informetrics" (2004) 0.00 
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  7. Bar-Ilan, J.: ¬The Web as an information source on informetrics? : A content analysis (2000) 0.00 
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  8. Bar-Ilan, J.: ¬The use of Web search engines in information science research (2003) 0.00 
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  9. Bar-Ilan, J.; Peritz, B.C.: Informetric theories and methods for exploring the Internet : an analytical survey of recent research literature (2002) 0.00 
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  10. Bar-Ilan, J.: What do we know about links and linking? : a framework for studying links in academic environments (2005) 0.00 
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  11. Bar-Ilan, J.: Informetrics (2009) 0.00 
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  12. Bar-Ilan, J.: Web links and search engine ranking : the case of Google and the query "Jew" (2006) 0.00 
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  13. Bar-Ilan, J.; Belous, Y.: Children as architects of Web directories : an exploratory study (2007) 0.00 
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  14. Bar-Ilan, J.; Keenoy, K.; Yaari, E.; Levene, M.: User rankings of search engine results (2007) 0.00 
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  15. Bar-Ilan, J.; Keenoy, K.; Levene, M.; Yaari, E.: Presentation bias is significant in determining user preference for search results : a user study (2009) 0.00 
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  16. Bar-Ilan, J.; Peritz, B.C.: ¬A method for measuring the evolution of a topic on the Web : the case of "informetrics" (2009) 0.00 
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  17. Bar-Ilan, J.; Levene, M.; Mat-Hassan, M.: Methods for evaluating dynamic changes in search engine rankings : a case study (2006) 0.00 
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