Social Network Analysis (Network Examples)

What is SNA?

This graph represents the entangled network of the most popular political blogs on the internet.

The Most Popular Political Blogs on the Internet

The theory of "Clash of Civilization" is based upon the idea that conflict among similar ideologies is over. Clashes nowadays are among different civilizations

The nodes here represent the main political entities in the Middle East and the edges represent the conflict between those entities

Social Networks

Rebuttal: we can observe clashes among entities of the same ideology!

[[Source: project done by students in SNA course, spring 2015]]

The Geography and Politics of News-Sharing Communities in Twitter

Rereading of “The Clash of Civilization" Theory by Samuel P. Huntington

This graph tracks user-generated tweets that contain links to New York Times online articles.

Nodes are individuals who predominantly share news stories on topics given by the legend (world, US, opinion, etc..). Links are “follow” relationships between individuals.

We observe that cosmopolitan, local scene, national liberal, national conservative, and national diverse are tightly connected groups

[[Source: http://necsi.edu/research/social/nyttwitter/ ]]

[[Source: http://www.issuenetwork.org/pres/news_networks2/images/8.gif ]]

MAC’15 from a Network Perspective

Political Networks

The nodes represent the organizing committee heads and the edges represent the most helpful head preferences and choices between them.

Strife and Power in the New Middle East

[[Source: project done by students in SNA course, spring 2015]]

All major nations involved in any type of conflict in the Middle East were mapped together with their descriptive links, which mentioned the nature and current condition of their relationships.

[[Source: The New York Times: http://www.nytimes.com/imagepages/2006/07/23/weekinreview/20060723_MIDEAST_GRAPHIC.html]]

SOCIAL NETWORK ANALYSIS

Many economic, political, and social interactions are shaped by the local structure of relationships:

– trade of goods and services

– sharing of information, favors, risk, ...

– transmission of viruses, opinions...

– access to info about jobs...

– choices of behavior, education, ...

– political alliances, trade alliances…

Networks everywhere!

Why SNA?

Social networks influence behavior

SNA is a unique perspective on how society functions

it centers on relations between individuals, groups, or social institutions

Instead of focusing on individuals and their attributes

or on macroscopic social structures

LET'S DISCOVER

crime, employment, human capital, friendships, voting, smoking,…

Interest in social structure

– understand social network structure and flow of interactions

– target influential agents

Marriage Ties Among Florentine Families

SOME NETWORKS

The nodes represent the families of Florentine in the 15th century and the links represent the marriages between these families.

[[Source: http://web.stanford.edu/~jacksonm/netbook.pdf]]

Passes between Players in a Football Match

OTHER NETWORKS

The nodes represent the players of the German and English teams and the links represent the passes between them in the FIFA 2010 world cup series.

Germany won 4-1

[[Source: http://www.maths.qmul.ac.uk/~ht/footballgraphs/germanyVengland.html]]

Ingredients Network

The nodes represent ingredients used in cooking recipes and links between them.

The size of labels indicates the frequency an ingredient is used in recipes.

New Global Interdependencies

[[Source: http://www.ladamic.com/wordpress/?p=294]]

The nodes represent the main economic entities in the world and the edges depict the fossil fuel trade between these entities.

We can see that the balance of fossil fuel trade is shifting eastward (especially to China).

[[Source: Resources Futures: http://resourcesfutures.org/#!/introduction]]

Movies Social Graph

Economic Networks

G8 Trade Balance

The nodes represent the characters of the movie “Titanic”. The links represent the conversations that the characters had with each other.

ANALYSIS

Business network

[[Source: http://moviegalaxies.com/movies/828-Titanic]]

The nodes represent the great eight countries and seven other countries.

The edges represent the trade balance (exports – imports) between these countries.

[[Source: project done by students in SNA course, spring 2015]]

Global business interests make up a complex network of connections between corporations from around the world. This graph intends to shed light on 'who owns what' in the global marketplace and on the intricate nature of the world wide "business"

[[Source: http://flickr.com/photos/zoharma/97214235/]]