Asia Web Watch

Asia Online Materials Statistics

Editor: Dr T.Matthew Ciolek tmciolek@ciolek.com

Est.: 1 Oct 1997. Last updated: 9 May 1998


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Web Databases Statistics - Table 015

Table 015

A study by Lawrence, Steve and C. Lee Giles. 1998. Searching the World Wide Web. 
Science, Vol. 280, 3 April, pp. 98-100 has measured effectiveness with which
various search engines indexed an estimated 320 mln pages comprising the
WWW universe in mid-December 1997: 

Table 015
The six most effective WWW search engines (Dec 1997)
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Database	  overall WWW 	    percent of	     estimated *
		   coverage       invalid links   valid WWW coverage
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HotBot		     34%	      5.3              32.2%
Altavista	     28%              2.5              27.3%
Northern Light	     20%              5.0              19.0%
Excite		     14%              2.0              13.7% 
Infoseek	     10%              2.6               9.7%
Lycos		      3%              1.6               2.9%
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* computed from Lawrence & Giles (1998) data
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