Alta Vista

[Michael Moennich <Michael.Moennich _at__ ubka.uni-karlsruhe.de>]

Liebe Listenteilnehmer,
die folgende Information mag von Interesse sein:

Quelle:
SEARCH ENGINE REPORT #17 March 31, 1998

>AltaVista's Imperfect Mirrors
>
>AltaVista maintains a network of mirror sites outside the United
>States. These are meant to be identical copies of the main AltaVista
>index, but in fact, all but one of the mirrors list fewer pages than
>the main service.
>
>AltaVista confirmed the problem and said that it is working on it, but
>that it could not release more details on the situation, at the
>moment.
>
>It is likely that the mirror sites don't yet have the hardware
>structure of the main site, which was upgraded late last year when the
>index was increased from 30 million to 100 million web pages.
>
>Some spot-checking of URL counts seems to indicate that the mirrors
>have about one-quarter to one-third the pages of the main index.
>
>This is important to search engine users outside the US. Mirrors may
>provide a slightly faster response, due to their closer physical
>proximity, but they are not as comprehensive as the main service.
>Related to this, they will display substantially different results
>than the main index.
>
>AltaVista's Canadian mirror is the exception. Recently launched, the
>mirror includes 12 million more Canadian web pages than the main
>service contains. Canadians, and those looking for information about
>Canada, should certainly compare AltaVista Canada to the main service,
>to see if the extra pages produce better results.
>
>As a reminder, there is no need to submit web sites to each of the
>mirrors. A submission to any of them simply causes the
>California-based spider to visit a site and add pages to the main
>index there. This index is then copied and sent to the mirrors.
>

Mit freundlichen Gruessen
M. Moennich

*********************************************
 Dr. Michael W. Moennich (mit Umlaut)
 moennich _at__ ubka.uni-karlsruhe.de
 Universitaetsbibliothek Karlsruhe, Postfach 6920
 D-76049 Karlsruhe. Tel. 0721/608-2298, Fax -4886
 http://www.ubka.uni-karlsruhe.de/~michael