# Posts Tagged ‘ social network analysis ’

## R Code for A Justification and Application of Eigenvector Centrality

November 8, 2012
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Leo Spizzirri  does an excellent job of providing mathematical intuition behind eigenvector centrality. As I was reading through it, I found it easier to just work through the matrix operations he proposes using R.  You can find his paper her...

## igraph and SNA: an amateur’s dabbling

June 29, 2012
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I’ve been playing with the igraph package a bit lately (see previous post HERE) and wanted to approach a problem I once visited in the past. The basic gist of the problem is this: Students in a class are asked … Continue reading →

## An Example of Social Network Analysis with R using Package igraph

May 16, 2012
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by Yanchang Zhao, RDataMining.com This post presents an example of social network analysis with R using package igraph. The data to analyze is Twitter text data of @RDataMining used in the example of Text Mining, and it can be downloaded … Continue reading →

## Data Science Books for Computational Journalists

May 8, 2012
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There are quite a few books out now on “data science”. I’ve picked out three that I think are the best place to start for computational journalists. First is Machine Learning for Hackers, by Drew Conway and John Myles White. The autho...

## Using SNA in Predictive Modeling

April 10, 2012
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In a previous post, I described the basics of social network analysis. I plan to extend that example here with an application in predictive analytics. Let's suppose we have the following network (visualized in R)Suppose we have used the igraph package ...

## An Introduction to Social Network Analysis with R and NetDraw

April 10, 2012
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With the rise in the use of social media, data related to social networks is ripe for analysis using techniques from social network analysis and graph theory. According to International Network for Social Network Analysis, ‘Social network analysis is...

## Information Transmission in a Social Network: Dissecting the Spread of a Quora Post

September 7, 2011
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tl;dr See this movie visualization for a case study on how a post propagates through Quora. How does information spread through a network? Much of Quora’s appeal, after all, lies in its social graph — and when you’ve got a network of users, all broadcasting their activities to their neighbors, information can cascade in multiple

## SNA: Visualising an email box with R

August 10, 2011
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Are statistics sexy? Visualising social networks certainly is! I wrote a little function, which makes producing beautiful plots depicting a mailbox with R an extremely easy task. I find visualisations of ‘social graphs’ particularly appealing. They look like flowers. I … Continue reading →

## Data preparation for Social Network Analysis using R and Gephi

June 2, 2010
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I want to share my experience in generating the data for social network analysis using R and analyzing it using Gephi... WHICH DATA STRUCTURE TO USE FOR LARGE GRAPHS?I quickly realized that using edge lists and adjacency matrix gets difficult as the g...

## Social Network Analysis using R and Gephis

April 28, 2010
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After learning the basics of R, I decided to learn something harder last week. I picked Social Network Analysis (SNA) to learn the concepts of SNA and R. My primary interest in SNA is visual exploration of networks, so I needed to find a tool first.&n...