Re: search engines material

From: Manuel Lemos (mlemos_at_acm.org)
Date: 07/05/04 

Date: Sun, 04 Jul 2004 22:59:31 -0300

Hello,

On 07/04/2004 09:24 PM, heidi wrote:
> 1 : how does a search engine really works ?? I know it's with robots, and
> indexing. But is there an open source project which I could install to
> really find out the working of a true search engine? submitting URL, and
> automatic robots who check those URL's every two weeks or so (on the net, so
> not on the same domain the search engine is stationed). does not has to be
> fancy lay-out or something. I'm very curious how it is done

You may want to take a look at htdig. If you want to test it with PHP,
you may also want to take a look at this htdig interface class from PHP:

Class: Htdig indexing and searching Web pages interface
http://www.phpclasses.org/htdiginterface

> 2 : How does a search engine ranker work? not the robot, but to know which
> position you are in let's say the ten major engines (limited to first 100
> places look-up). and again an open source project would be nice, but that is
> probably out of reach.

Personally I would only be bothered with Google, even now that Yahoo is
no longer using Google. Basically there is Google page rank that
considers inbound links and outbound links. The actual formula is the
business secret but I guess it is safe that more inbound links you have
from high page rank pages the better. 

-- 
Regards,
Manuel Lemos
PHP Classes - Free ready to use OOP components written in PHP
http://www.phpclasses.org/
PHP Reviews - Reviews of PHP books and other products
http://www.phpclasses.org/reviews/
Metastorage - Data object relational mapping layer generator
http://www.meta-language.net/metastorage.html

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