REFERENCES

Bar-Ilan, J. ( 2001 ). Methods for measuring search engine performance over time . Poster Proceedings of the 10th International WWW Conference , Hong Kong .

Bar-Ilan, J. ( 2002 ). Methods for measuring search engine performance over time . Journal of the American Society for Information Science , 53 ( 4 ), 308 “319 .

Bharat, K. & Broder, A. ( 1998 ). A technique for measuring the relative size of public web search engines . Proceedings of the 7th International WWW Conference , Brisbane Australia .

Hoelscher, C. ( 1998 ). How Internet experts search for information on the Web . In H. Maurer & R.G. Olson (Eds.), Proceedings of WebNet98 - World Conference of the WWW, Internet & Intranet . Charlottesville, VA : AACE .

Jansen, B. ( 2000 ). An investigation into the use of simple queries on web IR systems . Information Research: An Electronic Journal , 6 ( 1 ).

Jansen, B., Spink, A., & Saracevic, T. ( 2000 ). Real life, real users, and real needs: A study and analysis of user queries on the Web . Information Processing and Management , 36 ( 2 ), 207 “227 .

Kendall, M. & Gibbons, J. D. ( 1990 ). Rank Correlation Methods . London : Edward Arnold .

Lawrence, S. & Giles, C. L. ( 1998 ). Searching the World Wide Web . Science , 5360 ( 28 ), 98 “100 .

Lawrence, S. & Giles, C. L. ( 1999 ). Accessibility of information on the Web . Nature , 400 , 107 “109 .

Risvik, K. & Michelsen, R. ( 2002 ). Search engines and web dynamics . Computer Networks , 39 ( 3 ), 289 “302 .

Silverstein, C., Henzinger, M., Marais, H., & Moricz, M. ( 1999 ). Analysis of a very large web search engine query log . SIGIR Forum , 33 ( 1 ), 6 “12 .

Spink, A., Jansen, B., Wolfram, D., & Saracevic, T. ( 2002 ). From e-sex to e-commerce: Web search changes . IEEE Computer , 35 ( 3 ), 107 “109 .

Spink, A., Wolfram, D., Janson, B., & Saracevic, T. ( 2001 ). Searching the Web: The public and their queries . Journal of the American Society for Information Science , 52 ( 2 ), 226 “234 .

Wolfram, D. ( 1999 ). Term co-occurrence in Internet search engine queries: An analysis of the Excite data set . In Proceedings of the 27th Annual Conference of the Canadian Association for Information Science ( pp. 438 “451 ).