Redes sociales-facebook

Made by: Cristina Blazquez,
Maria Guerrero,
Amicie de Quatrebarbes
Summary

1) Abstract……………………………………………………………………. 3

2) Introduction ………………………………………………………………..3

3) Social Network analysis …………………………………………………... 4

a) Social network analysis
b) Pajek software

4) Methodology…………………………………………………………………6

5) Pajek’s results………………………………………………………………. 9

6) Social Network ……………………………………………………………...10
a) What is social network?
b) Different social network

7) Facebook …………………………………………………………………....12
a) a few words about facebook
b) facebook, inc as a company
c) employees and revenues
d)facebook aroundthe world
e)advertisement

8) Conclusions ………………………………………………………………... 14

Abstract

This work is about social network analysis. We have used the Pajek to interpret the data.
The main objective of this research is to be able to use the Pajek program without problems and to deepen our knowledge of social networking.

The methodology chose is starting from the most globalconcept to the most specific one (Social network, Facebook, Pajek and Pajek results)

Key words: Social network, Facebook, Pajek, connections, relationship, periphery and core elements.

Introduction

We are going to describe a topic very popular nowadays: social network that has been a subject of increasing interest in the sciences as well as social sciences recently. Social network ispresent everywhere and is a part of our life; this is the reason for which we have chosen this very interesting topic.
We are not going to speak only about social network, we are going to study the functioning of the Pajek program in order to analyze and interpret information, also we are going to introduce Facebook, and we have shown some examples of social network with their differences.
Socialnetwork analysis is a method of inquiry that focuses on relationships between subjects such as individuals, organizations or nation states. However, it has also been applied to analysis relationships between objects as diverse as the Internet, scientific papers, organisms. In our case, we focused on the relationships between Maria’s friends.

Social network análisis

a) Social network analysisA social network analysis is the mapping and measuring of links and relationships between organisations and individuals engaged in networking or collaborative activities. 

Social network analysis may reveal:

- specific expertise or influence

- how people cooperate, and with whom

- who is overburdened with requests for assistance

- Who fails to collaborate at all. Since it provides both visual and mathematical analyses, it is a very powerful technique for evaluating mergers and acquisitions, joint ventures, and inter-company relationships.

There exists a lot of software to analyse the social network, such as Pajek, ORA, Automap, Cfinder, Commetrix, etc.
For our work, we choose the Pajek software.

b) Pajek Software

Pajek start to be developed inNovember 1996. It’s a program for analysis and visualization of large networks (several thousands or millions of vertices) and its latest version is freely available, for non commercial use.

The main goals of Pajek are:
- To support abstraction by (recursive) decomposition of a large network into several smaller networks that can be treated further using more sophisticated methods
-To provide the user with some powerful visualization tools
- To implement a selection of efficient sub quadratic algorithms for analysis of large networks.

With Pajek we can:
- Find clusters (components, neighbourhoods of “important” vertices, cores, etc.) in a network
- Extract vertices that belongs to the same clusters
- Show them separately, possibly with the...