Advanced SNA

Instructor: Steve Borgatti

TAs: Adam Jonas, Theresa Floyd

Overview

This is a 4-day (Mon-Thu) workshop designed for people interested in gaining both a deeper and broader look at network theory and methods. It is assumed that participants are familiar with UCINET and have some knowledge about network concepts.

New this year will be a focus on making the round trip from importing data from Excel, managing it, visualizing it, and exported results back to Excel for import to a stat package. Also, from a software point of view, focusing more on the command line interface rather the menu system.

The workshop has several conceptual goals, including:

  • Taking a deeper look at what the fundamental charter of network analysis is, characteristic modes of explanation, issues of agency and structure, what is our unique contribution, and so on

  • Making connections between different network concepts, such as seeing the underlying unity behind families of measures, including those at different levels of analysis, such as measure of cohesion and measures of centrality

    • Covering more interesting centrality measures than just the big four measures that most workshops have time for, including centrality measures that take into account node attributes

    • New concepts and methods in network analysis

In addition, the workshop has several methodological and practical goals, including:

    • Using UCINET more effectively, especially making use of batch processing and powerful command line capabilities. For example, the command line interface makes it possible to do things like:

                  • ->net = loadexcel(kracknet.xls) //load excel file and create ucinet file

                  • ->draw net //visualize network

                  • ->dsp corr(indeg(net),outdeg(net)) //correlate indegree with outdegree

                  • ->cent = centrality(net) //compute centrality measures

                  • ->holes = holes(net) //compute structural holes measures

                  • ->attr = loadexcel(krackattr.xls) //import attributes from Excel

                  • ->data = joincols(cent,holes,attr) //combine centrality, structural holes, and attribs into one file

                  • ->saveasexcel data mydata.xls //export to excel

    • Learning the best ways to import data structured in widely varying ways

    • Deriving the right variable for the research question, including things like measuring change

    • Integrating network variables and results into a larger study -- i.e., how do you use this stuff to generate knowledge write publishable papers.

Schedule

Slides and exercises can be found here: http://tinyurl.com/advancedmaterials

Monday - Introduction

    • Big Picture

    • UCINET refresher

    • slides:

      • agenda

      • introduction

      • research designs

      • key concepts

Tuesday - World of Dyads

    • Relating dyadic data

    • Combining dyadic data

    • Dyadic network concepts

Wednesday - World of Nodes

    • Clustering dyadic data

    • Testing dyadic hypotheses

    • Ego networks

    • Centrality

Thursday - World of Networks

    • Centrality - cont.

    • Cohesion and Shape

Materials

Software

Recommended Textbook

Additional Readings

    • Bonacich, P. 1987. "Power and Centrality: A Family of Measures." American Journal of Sociology. 92:1170-1182. [^pdf]

    • Borgatti, S.P. 2005. Centrality and network flow. Social Networks. 27(1): 55-71. [pdf]

    • Borgatti, S.P. and Everett, M.G. 2006. A graph-theoretic perspective on centrality. [pdf].

Datasets