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20120226-NodeXL-Twitter-strataconf network graph large | by Marc_Smith
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20120226-NodeXL-Twitter-strataconf network graph large



Data set:


These are the connections among the Twitter users who recently tweeted the word strataconf when queried on February 26, 2012, scaled by numbers of followers (with outliers thresholded). Connections created when users reply, mention or follow one another. The data set starts on 2/19/2012 17:46 and ends on 2/26/2012 22:17 UTC. Green lines are "follows" relationships, blue lines are "reply" or "mentions" relationships.


Layout created with the "Group Layout" feature of NodeXL which tiles bounded regions for each cluster. The Harel-Koren layout algorithm positioned each vertex:


Clusters calculated by the Clauset-Newman-Moore algorithm are also encoded by color. Clauset-Newman-Moore algorithm is defined here:


A larger version of the image is here:


Betweenness Centrality is defined here:


Top most between users:












Top word pairs by frequency of mention


big, data, 166

next, week, 124

data, visualization, 79

public, good, 58

@strataconf, next, 45

#strataconf, next, 43

attending, @strataconf, 38

via, @radar, 33

excellent, overview, 32

#bigdata, landscape, 32

social, firehose, 32

santa, clara, 31

looking, forward, 31

sell, out, 30

#strataconf, #datascience, 30

running, out, 28

still, haven, 26

cto, @nik, 26

@radar, #strataconf, 26

miss, #thecube, 21


Graph Metric, Value

Graph Type, Directed

Vertices, 477

Unique Edges, 3343

Edges With Duplicates, 823

Total Edges, 4166

Self-Loops, 235

Connected Components, 22

Single-Vertex Connected Components, 21

Maximum Vertices in a Connected Component, 456

Maximum Edges in a Connected Component, 4144

Maximum Geodesic Distance (Diameter), 5

Average Geodesic Distance, 2.443044

Graph Density, 0.015657206

Modularity, 0.293503

NodeXL Version,


More NodeXL network visualizations are here: and here:


A gallery of NodeXL network data sets is available here:


NodeXL is free and open and available from


NodeXL is developed by the Social Media Research Foundation ( - which is dedicated to open tools, open data, and open scholarship.


Donations to support NodeXL are welcome through PayPal:


The book, Analyzing social media networks with NodeXL: Insights from a connected world, is available from Morgan Kaufmann and from Amazon.


Marc Smith on Twitter.

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Uploaded on February 27, 2012