How Search Engines Work. Any ideas? Building an index Dan taylor Flickr Creative Commons.

How Search Engines Work

Any ideas?

Building an index

Dan taylor Flickr Creative Commons

Indexing “spiders” crawl the web

Rocketclicks.com

Spiders collect

Spiders collectWeb address (URL)


Words on the webpage



Where those words were found on the page or in the code




Meta tags (specific keyword coding)

Target example

http://www.target.com/




Meta tags (specific keyword coding)

Now, it needs to rank the

webpages it has indexed

Probably looks a little something like

this!

The Formula (algorithm) includes…

Words that the spider collected



Inbound links from other sites




“Freshness” vs. tried and true




“Freshness” vs. tried and true

Patterns over time (what people have searched)

Also,Geographic ranking

Personal selection history (if logged in)

Many many many other secret factors

How search works(according to Google)

http://www.youtube.com/watch?v=BNHR6IQJGZs&noredirect=1

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