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Web browser- software that goes into the internet and
retrieves information, displays the results and allows
you to follow links to websites.
i.e. Mosiac (1993) Netscape(1994)
MS Internet Explorer (1995)
Opera (1996) Phones/Wii
Mozilla’s Firefox (2004)
Apple’s Safari (2003)
Google’s Chrome (2008)
Search Engines vs. Search Directory
Search Engine- is an online
tool/program, or a list of
instructions, that search for
specific terms on the world
Done by computers.
Google, Bing, Youtube
They give you everything
Search Directory-is catalog
of website organized by
Done by humans
Provide results that have
standard of relevance
good when you have a
History of Search Engines (1994)
Early search engines were based on a
basic Content Ranking algorithm
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1996 Google Changes Everything
Google changed “search” by adopting a research
library strategy in their algorithm which ranks
authors/books/papers in particular fields of
study based on how many times mentioned in
Dewey, Bloom, Gardner, Sizer, Glasser
Link-based Algorithm is based on Link popularity.
The more people link to your site the more popular
your site and the higher your page rank the more
often your site will appear in Google’s search
results of a particular search term
How Search Engines
Find Websites for us
The Search Engine sends a spider or googlebot to visit
a webpage. It only knows about your webpage if Ad is
purchased or it’s linked in another website.
Then indexer looks at keywords and links and their
Anchor Text and ranks the webpage-Page Rank Stats
Check your page
Then the Search engine gives us (the searcher)
webpages based on our keyword searches in a search
Why is Wikipedia always
in top of Results List?
Page rank (great use of links)
2 million grant in 2010 from Google to
2009 Era of Personalization
Google Changes everything again with
introduction of personalization.
Data Aggregators collect as much data
about each of us so that they can
personalize our searches (and
advertising) to us based on what we
usually search, like, desire.