Tarun solanki,S K College Of Business

Management,

What is a Network?Wikipedia definition - A social network is a social

structure made of individuals (or organizations) called "nodes," which are tied (connected) by one or more specific types of interdependency, such as friendship, kinship, financial exchange, dislike or relationships of beliefs, knowledge or prestige

Social networking is the grouping of individuals into specific groups, like small rural communities or a neighborhood subdivision,

node

node

node node

node

node

node

node

node

node

node

node

node

node node

node

node

Link

People Typically Maintain 10-20 Close Relationship Among Thousands Of Acquaintances

Social Networks

Why are we studying Social Networks ?

Social Network Analysis Social network analysis [SNA] is the mapping and measuring of relationships

and flows between people, groups, organizations, computers or other information/knowledge processing entities.

The nodes in the network are the people and groups while the links show

relationships or flows between the nodes.

Social Network Analysis We measure Social Network in terms of:

1. Betweenness Centrality: A node with high betweenness has great influence over what flows in

the network indicating important links and single point of failure.

2. Closeness Centrality: The measure of closeness of a node which are close to everyone else. The pattern of the direct and indirect ties allows the nodes any

other node in the network more quickly than anyone else. They have the shortest paths to all others.

3. ReachThe degree any member of network can reach other members network.

Criteria It is accessible over the web with a web

browser.User must explicitly state their relationship

with other people qua stating a relationship.Relationship must be visible & browsable by

other users in the system.The website or other web based frame work

must have explicit built-in support for a users making these connections to other people.

Technology : LinkedInWhat is Your Network? When your connections invite their connections,

your Network starts to grow. Your Network is your connections, their connections,

and so on out from you at the center.

How do you classify users? Your Network contains professionals out to “three

degrees” — that is, friends-of-friends-of-friends. If each person had 10 connections (and some have many more) then your network would contain 10,000 professionals.

Technology Various technologies that help in creating

Social Networks are:

1) Email2) Blogs3) Social Networking Software like Orkut,

LinkedIn etc.

Why internet is popular mean for social networking?

The Internet is powerful because it bridges distance at a low cost

When people first meet online they tend to “like” each other more

Less stressful than face-to-face meetingSuperficialities aside people focus on

communicating their “selves”

Popular social networking sites

Personal sites-Myspace, Orkut, CyworldProfessional/work related-LinkedInRomantic relationship initiation-friendsterMicro logging-TwitterMusic-last.fmMovies-flicksterPhotos/pictures-flickr

TOP FIVE POPULER SITE

(1) Facebook

(2) Myspace

(3) Bebo

(4) Friendster

(5) Hi5

Mark zuckerberg

TABLE SUMMADISING SOCIAL NETWORKING SITE USER

Style of Gender age Typical site No. of people

Alpha socialisers

Flirting, meet new people

Mostly male Under 25s Bebo, my spage, hi5

MINORITY

Attention seekers

Posting photos to get comments from others

Mostly female Teen to 35+ Bebo, my spage,ICQ

SOME

Followers Keeping up with friends

Male & female All Bebo, my spage,facebook, hi5, ICQ

MANY

Faithful Finding old friends

Male & female Older 35 facebook MANY

fungtionals Pursuing interest & hobbies

Mostly male Older 35 Facebook, Bebo, my spage

MINORITY

Privacy concernsSocial networking sites provide privacy

options but users are generally unaware or tend to ignore such concerns

Stalkers, terrorists, ill-doers, con-artists could benefit from such issues

Facebook’s controversial decision to make visible relationship actions to entire social group

Questions time??