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Five search engines, Alta Vista, Excite, HotBot, Infoseek, and Lycos, are compared for precision on the first 20 results returned for 15 queries, adding weight for ranking effectiveness. All searching was done from January 31 to March 12, 1997. In the study, steps are taken to ensure that bias has not unduly influenced the evaluation. Friedmann's randomized block design is used to perform multiple comparisons for significance. Analysis shows that Alta Vista, Excite and Infoseek are the topdoi:10.1002/(sici)1097-4571(1999)50:10<870::aid-asi4>3.3.co;2-7 fatcat:nbfgpqzoxfg45mlimhlj2niage