15 01, 2018

Academic Journals RSS feeds

2018-06-17T16:10:54+00:00 January 15th, 2018|Tags: , , , , , |

For the last decade or so, I have received my regular dose of new academic content from journal RSS feeds. In recent years, social media*, listservs, and thoughtful friend e-mails have helped me discover many great articles. Also recently (much to my dismay!) some publishers** have decided to discontinue their RSS. [...]

14 06, 2017

Static and dynamic network visualization with R

2018-07-11T14:46:37+00:00 June 14th, 2017|Tags: , , , , , , , , , , , , , , , , , , , , , , , , , |

This is a comprehensive tutorial on network visualization with R. It covers data input and formats, visualization basics, parameters and layouts for one-mode and bipartite graphs; dealing with multiplex links, interactive and animated visualization for longitudinal networks; and visualizing networks on geographic maps. To follow the tutorial, download the code and [...]

6 04, 2016

Sunbelt network visualization: R and Gephi tutorials

2018-06-15T07:13:23+00:00 April 6th, 2016|Tags: , , , , , , , , , , |

More details to follow, but for now: workshop materials from Sunbelt 2016.   Basic and Advanced Network Visualization with Gephi Sunbelt 2016 workshop materials Network visualization with Gephi: workshop handout (PDF) Network visualization with Gephi: example data files (ZIP)   Basic and Advanced Network Visualization with R Sunbelt 2016 workshop materials [...]

4 03, 2016

Upcoming network visualization workshops at Sunbelt and POLNET

2018-06-15T17:51:25+00:00 March 4th, 2016|Tags: , , , , , , , , , |

In the next few months,  I will be running several network visualization workshops using R and Gephi at Sunbelt 2016 (Newport Beach, CA) and Political Networks (St. Louis, MO). The descriptions follow below - if you are going to one of the conferences, do stop by! By popular demand, the workshops [...]

10 01, 2016

Network analysis with R and igraph: NetSci X Tutorial

2018-07-11T14:53:08+00:00 January 10th, 2016|Tags: , , , , , , , , , , , , , , , , |

Get the tutorial PDF and code, or download on GithHub. A more recent tutorial covering network basics with R and igraph is available here. If you find the materials useful, please cite them in your work – this helps me make the case that open publishing of digital materials like this [...]

8 06, 2015

The world as seen in political statements

2018-06-15T17:49:13+00:00 June 8th, 2015|Tags: , , , , , |

A new Politico post produced by our lab examines the mentions of countries around the globe in congressional documents. We look at the frequency of country mentions and co-occurrence. These numbers were extracted from political statements provided by VoteSmart. Here we post the data we used for those visualizations. The files [...]

20 05, 2015

Term co-occurrence in party documents: Network data from our Politico post

2018-06-15T15:42:17+00:00 May 20th, 2015|Tags: , , , , , |

David Lazer, Oren Tsur, and I recently took a look at the use of the term "coal" in documents produced by members of the US Congress. Some numbers and visualizations based on this were published by Politico. Here, we post the data behind the network map of term co-occurrence in coal-related [...]

29 03, 2015

Deleted congressional tweets: the R code

2018-06-15T17:33:24+00:00 March 29th, 2015|Tags: , , , , , , |

If you are interested in analyzing the deleted tweets of politicians, my new R package PolitwoopsR is available on GitHub. Also see this R script examining deleted tweets. [Update 15/04/02] If you were brought here by a Dean Richards Twitter bot, read this. A few days ago I published [...]

10 03, 2015

The Congress Tweets You Never Did See

2018-06-16T01:04:05+00:00 March 10th, 2015|Tags: , , , , , , |

Politicians Descriptive Party States URLs Terms/Tags Sentiment Term net [UPDATE 15/03/30] Check out this follow-up post to get the R code used to extract and clean the Politwoops & Twitter data. A package that automates the data collection is now available on GitHub: PolitwoopsR. For some months now, I've been playing [...]

19 04, 2014

Facebook data collection and photo network visualization with Gephi and R

2018-06-15T17:48:13+00:00 April 19th, 2014|Tags: , , , , , , , , , |

Facebook Network: Gephi Facebook Network: igraph Facebook Network: qgraph [Update April 26 2o14] Esteban Moro reminded me that there's no need to manually rescale igraph layouts now - one can use layout.norm() instead (script updated accordingly). Hugle [...]

23 03, 2014

Gephi Workshop at Northeastern’s NULab

2018-06-15T17:41:44+00:00 March 23rd, 2014|Tags: , , , , |

On March 25, the NULab for Texts, Maps, and Networks is holding a Gephi workshop on static/dynamic network visualization that I'm leading.  Details and materials for the workshop follow below. Time: Tue, March 25, 2014 - 12:00-1:30pm Location: Northeastern University, Dana Building floor 5, CCNR Description: This workshop provides an introduction [...]

13 10, 2013

Boston Data Day 2013 Skill-A-Thon

2018-06-15T08:01:28+00:00 October 13th, 2013|Tags: , , , , , , , , , , |

The Data Swap 2013 skill-a-thon organized by The Boston Globe, NULab for Texts, Maps, and Networks, and The Boston Area Research Initiative is taking place on October 17-18. The materials for the quick network tutorial I'm doing there are posted below. DataSwap 2013 network presentation (Download PDF). Visualizing network dynamics: Download [...]

12 02, 2013

Topics in Mainstream Media: A Dynamic Network Visualization

2018-06-22T00:17:50+00:00 February 12th, 2013|Tags: , , , , , , , , , , , , |

My doctoral dissertation (defended a few months back) studies a dynamic network of news outlets and the topics they cover over time. It implements a measure of media fragmentation and uses actor-based modeling to evaluate the impact of economic, political, organizational, and structural forces on certain properties of the media agenda. [...]

21 12, 2012

Intro materials: network analysis software (UCINET, NodeXL, Gephi, Statnet, ERGM, RSiena)

2018-06-15T07:23:46+00:00 December 21st, 2012|Tags: , , , , , , , , , , , , , , , , |

In the fall of 2012, I got to design & lead the weekly labs for a network seminar at USC. I also worked on the methods portion of the syllabus for the class. COMM 645: Communication Networks is a PhD-level course taught by Peter Monge. The labs cover a range of [...]

18 11, 2012

Political Efficacy on the Internet: A Media System Dependency Approach

2018-06-15T17:37:50+00:00 November 18th, 2012|Tags: , , , , , , , , , , |

Just presented at the NCA 2012 Convention, Orlando FL, Top Papers in Political Communication panel. This study takes an MSD approach to look at the impact of the Internet on political efficacy. The results show that online political efficacy is associated with the perceived comprehensiveness and credibility of online news. Efficacy [...]