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How This Search Engine Works………

October 17, 2013

By:
SWATI LUTHRA
Roll No: 54
MONICA
1
Roll No: 06
WHICH SEARCH ENGINE DO
YOU USE?
•Google
•Yahoo
•Other
October 17, 2013

2
HOW MANY OF YOU HAVE A
GOOGLE ACCOUNT?
Yes/No
October 17, 2013

3
INTRODUCTION
• Google is a web search engine owned by Google.Inc
•
•

that brings whatever information you need.
Google Search is the most-used search engine on
the World Wide Web.
Google Search was originally developed by Larry
Page and Sergey Brine in 1997.

October 17, 2013

4
GOOGLE’S MISSION
“To organize the world's information
and make it universally accessible
and useful.”

October 17, 2013

5
HOW DOES GOOGLE WORK?
• Web Crawler
• Indexer
• Search Algorithm

October 17, 2013

6
WEB CRAWLER
• Googlebot finds and fetches web pages.
• When googlebot fetches a page, it culls all the links
appearing on the page and adds them to a queue
for subsequent crawling.
• Retrieves pages on the web and hands them off to
the Google indexer.

October 17, 2013

7
INDEXER

October 17, 2013

8
SEARCH ALGORITHM“PAGERANK”
A Web page's PageRank depends on a few factors:
• The frequency and location of keywords within the
Web page.
• How long the Web page has existed.
• It's not easy to cheat the system.
• The number of other Web pages that link to the
page in question.

October 17, 2013

9
THE ACTION BUTTONS

Google Search
October 17, 2013

I’m Feeling Lucky
Directly displays the web page with the
10
highest rank
THE RESULTS
Length of Time
Type of Search
Number of Hits

The URL of the
page

At the top ofDefinition of the Term search
every Google
results page, Google displays a
The title of the page
diminutive, but fully featured
of
version of A “snippet”the text page
its home
containing
search
term(s)

And, if the search
term appears on more
than one page on the
site, a link to a list of
those additional
pages

October 17, 2013

Links to similar pages

Sponsored Links
(Paid Advertisements)

11
How Google doodle works?

October 17, 2013

12
• Google slowly fades the image in over 10 steps of 50
milliseconds. After 500 milliseconds:
• <img> #2, displaying animation frame 2, is fully opaque
and covers <img> #1.
• The top property of <img> #1 (which is now hidden by the
fully opaque <img> #2 ) is increased so that <img> #1 now
points at animation frame 3.
• JavaScript is now used to decrease the opacity
of <img> #2 every 50 milliseconds This means <img> #2
(displaying animation frame 2) slowly becomes
transparent, allowing <img> #1 (now displaying animation
frame 3) to fade into view.
• The process repeats
October 17, 2013

13
Focus on the user and all else will
follow.
•Pages load instantly.
•The interface is clear and simple.
•Advertising on the site must offer
relevant content and not be a
distraction
October 17, 2013

14
How Google earns its bread
•AdWords
•AdSense

And they say it :
“You can make money without doing
October 17, 2013
evil.”

15
October 17, 2013

16
October 17, 2013

17
October 17, 2013

18
October 17, 2013

19
Future challenges of
Technical
• Video search challenge.
• Increasing their web pages.
• Increasing their bandwidth.

October 17, 2013

20
What can Trip

up ?

•Media scared of the Giant.
•Partnerships & Acquisitions

•New streams of Revenue

October 17, 2013

21
What can Trip

up ?

•Media scared of the Giant.
•Partnerships & Acquisitions

•New streams of Revenue

October 17, 2013

22
THANK YOU!
October 17, 2013

23

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google working

  • 1. How This Search Engine Works……… October 17, 2013 By: SWATI LUTHRA Roll No: 54 MONICA 1 Roll No: 06
  • 2. WHICH SEARCH ENGINE DO YOU USE? •Google •Yahoo •Other October 17, 2013 2
  • 3. HOW MANY OF YOU HAVE A GOOGLE ACCOUNT? Yes/No October 17, 2013 3
  • 4. INTRODUCTION • Google is a web search engine owned by Google.Inc • • that brings whatever information you need. Google Search is the most-used search engine on the World Wide Web. Google Search was originally developed by Larry Page and Sergey Brine in 1997. October 17, 2013 4
  • 5. GOOGLE’S MISSION “To organize the world's information and make it universally accessible and useful.” October 17, 2013 5
  • 6. HOW DOES GOOGLE WORK? • Web Crawler • Indexer • Search Algorithm October 17, 2013 6
  • 7. WEB CRAWLER • Googlebot finds and fetches web pages. • When googlebot fetches a page, it culls all the links appearing on the page and adds them to a queue for subsequent crawling. • Retrieves pages on the web and hands them off to the Google indexer. October 17, 2013 7
  • 9. SEARCH ALGORITHM“PAGERANK” A Web page's PageRank depends on a few factors: • The frequency and location of keywords within the Web page. • How long the Web page has existed. • It's not easy to cheat the system. • The number of other Web pages that link to the page in question. October 17, 2013 9
  • 10. THE ACTION BUTTONS Google Search October 17, 2013 I’m Feeling Lucky Directly displays the web page with the 10 highest rank
  • 11. THE RESULTS Length of Time Type of Search Number of Hits The URL of the page At the top ofDefinition of the Term search every Google results page, Google displays a The title of the page diminutive, but fully featured of version of A “snippet”the text page its home containing search term(s) And, if the search term appears on more than one page on the site, a link to a list of those additional pages October 17, 2013 Links to similar pages Sponsored Links (Paid Advertisements) 11
  • 12. How Google doodle works? October 17, 2013 12
  • 13. • Google slowly fades the image in over 10 steps of 50 milliseconds. After 500 milliseconds: • <img> #2, displaying animation frame 2, is fully opaque and covers <img> #1. • The top property of <img> #1 (which is now hidden by the fully opaque <img> #2 ) is increased so that <img> #1 now points at animation frame 3. • JavaScript is now used to decrease the opacity of <img> #2 every 50 milliseconds This means <img> #2 (displaying animation frame 2) slowly becomes transparent, allowing <img> #1 (now displaying animation frame 3) to fade into view. • The process repeats October 17, 2013 13
  • 14. Focus on the user and all else will follow. •Pages load instantly. •The interface is clear and simple. •Advertising on the site must offer relevant content and not be a distraction October 17, 2013 14
  • 15. How Google earns its bread •AdWords •AdSense And they say it : “You can make money without doing October 17, 2013 evil.” 15
  • 20. Future challenges of Technical • Video search challenge. • Increasing their web pages. • Increasing their bandwidth. October 17, 2013 20
  • 21. What can Trip up ? •Media scared of the Giant. •Partnerships & Acquisitions •New streams of Revenue October 17, 2013 21
  • 22. What can Trip up ? •Media scared of the Giant. •Partnerships & Acquisitions •New streams of Revenue October 17, 2013 22