HowGoogleWorks_WUD06.pdf

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How Google
*
Works
(
&
why you should care)
*and Yahoo, and MSN, and …
Panagiotis Takis Metaxas
Computer Science Department
Wellesley College
World Usability Day 2006
Have you used the Web…
to get informed?
to help you make decisions?
Financial
Medical
Political
Religious
Other?…
The Web is
huge
>10
billion
static pages
publicly available,
…growing every day
Three times
this size,
if you count the “deep
web”
Infinite,
if you count
dynamically created pages
on your computer?
Your cell phone?
Your PDA?
Your thermostat?
Your toaster?
The Web is
omnipresent
… but it can be unreliable
Anyone
can be an author on the web!
Email Spam anyone?
50% of emails received at Wellesley College are spam!
The Web has Spam too!

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