Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10355165 | Information Processing & Management | 2005 | 9 Pages |
Abstract
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.
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Science Applications
Authors
Judit Bar-Ilan,