This ppt gives an introduction to Social Networking & also explains the six degrees rule.

1. Introduction to
SOCIAL NETWORKING

2. HARIHARAN.G (17MX105)
KOWSHIHAA.K (17MX110)
ANKITHA.P (17MX203)
JANANI.S (18MX155)
NIVETHAN.J (18MX159)

3. What is SOCIAL NETWORKING?
Social Networking refers to grouping of individuals
and organizations together via some medium,
in order to share thoughts, interests, and activities.

4. Social network defined
• Social networks are computer networks, linking people,
organization, and knowledge.
• A social network website allows users to:
1. Create a “profile”: setup an account to create a digital
representation of themselves
2. Select other members of the site as contacts or
connections
3. Communicate and engage with these users
• creates a social graph

5. Social graph defined
The information a social network collects
about a user includes
• contact information
• location, associations
• personal information
• work history
• personal preferences, who you’re friends
with, etc.

6. What are social networks used
for?
What do you do with your social networking
profile?

7. Inventor of social networking sites
Andrew Weinreich (The father of Social Networking)

8. First social networking site
Sixdegree.com

9. First social networking site

10. The Popularity Begins
• Social networking was born one fine day in
1971, when the email was sent.
• The two computers were sitting right next to
each other.
• The message said "qwertyuiop”.
• Day by day people invented many sites
and its popularity began.

11. The most popular social media sites:
 Facebook
 Twitter
 LinkedIn
 Pinterest
 Google+
 Instagram
 Snapchat

12.  Facebook is a social networking service launched
in February 4, 2004.
 It was founded by Mark Zuckerberg with his
college roommates and fellow Harvard University
student Eduardo Saverin.
 Total Users :1.59 billion (Approx)

13.  Twitter was created in March 2006 by Jack
Dorsey, Evan Williams, Biz Stone and Noah
Glass by July 2006 the site was launched.
 Total Users :974 million (Approx)

14.  LinkedIn is a social networking site designed
specifically for the business community.
 The goal of the site is to allow registered members to
establish and document networks of people they
know and trust professionally.
 Reid Hoffman is the founder of LinkedIn
 Total Users :414 million (Approx)

15.  In 2010, Systrom co-founded Instagram with Mike
Krieger in San Francisco, California.
 Total Users : 800 Million (Approx)

16. WHY SOCIAL NETWORKING IS
SO POPULAR IN THESE DAYS?
 Easy to access
 Opportunity to meet new
peoples
 Free to use
 Social networking sites are
user friendly

17. WHERE SOCIAL
NETWORKING HELPS
 Online Marketing
 Online Jobs
 Online News
 Chatting
 Share Pictures, Audio, Video

18. Advantages
of Social Networking Sites
 Connecting the World
 Get to Know What Happens Around the world
 Advertising
 Relaxation
 Information Sharing
 Organize and Participate in events
 Best Source for Bloggers
 Best Job Search Platform

19. Disadvantages Of Social
Networking Sites
 Spreads False And Unreliable
Information
 Causing Major Relationship Problems
 Cyber Bullying Is A Growing Problem
 Used To Profile and Discriminate people
 The Addiction Is Real

20. Six Degrees of Separation

21. Six degrees of separation Theory
 In 1929, Hungarian author Frigyes Karinthy in one of his
short stories titled Chains, said that
 “With growing communication and travel, the friendship
network would grow irrespective of the distance between
two humans.”
 “The social distance would shrink immensely.”
 “All the people on the planet could be connected to one
another by 5 or fewer people.”
 This theory captivated millions of mathematicians,
sociologists, and physicists and also laid the founding
stone of the first online social network.
 Soon, several “small world” projects were conducted.

22. Small world phenomenon
• The first significant empirical study of the small-world
phenomenon was undertaken by the social psychologist
Stanley Milgram.
• He chose random people & told them to Forward a letter
only to people they know on a first-name basis.
• He provided the target’s name, address, occupation, and
some personal information, but insisted that the
participants could not mail the letter directly to the target.

23. Randomness Concept

24. Randomness Concept

26. Present Scenario
• In 2011, Facebook and researchers computed that, the
average separation across 721 million people using
Facebook was only 3.74.
• In their research published in February 2016, this number
dropped down to 3.57, with more than 1.59 billion people
active on Facebook.
• On average, Facebook users are connected by 2.9 to 4.2
degrees of separation.

27. • Facebook mentions that this estimation was done using
the Flajolet–Martin algorithm.
• With a growing social network, the average separation
and connection would soon reduce to possibly 2 to 3
degrees of separation.

28. Social Network for IoT
• M2M (Machine - to - Machine) communication.
• The social aspect of a machine is its ability to form a
network with other machines.
• It includes information such as the machine's functional
details and related neighbourhood details.
• This allows other devices to offer their services to the
mentioned device based on the needs (requirements), as
well as offering services, data, and sensors.

29. A bidirectional social connection
between two machines

30. References
1) https://www.hackerearth.com/blog/algorithms/theory-six-
degrees-of-separation/
2) http://ravi-bhide.blogspot.com/2011/04/flajolet-martin-
algorithm.html
3) https://journals.sagepub.com/doi/full/10.1155/2016/8178417
4) https://www.slideshare.net/social-networking-sites-
presentation-49851676
5) “Networks, Crowds, and Markets: Reasoning about a
Highly Connected World” – By David Easley & Jon Kleinberg