Exploring communication networks to understand organizational crisis using exponential random graph models

In recent social network studies, exponential random graph (ERG) models have been used comprehensively to model global social network structure as a function of their local features. In this study, we describe the ERG models and demonstrate its use in modelling the changing communication network structure at Enron Corporation during the period of its disintegration. We illustrate the modelling on communication networks, and provide a new way of classifying networks and their performance based on the occurrence of their local features. Among several micro-level structures of ERG models, we find significant variation in the appearance of A2P (Alternating k-two-paths) network structure in the communication network during crisis period and non-crisis period. We also notice that the attribute of hierarchical positions of actors (i.e., high rank versus low rank staff) have impact on the evolution process of networks during crisis. These findings could be used in analyzing communication networks of dynamic project groups and their adaptation process during crisis which could lead to an improved understanding how communications network evolve and adapt during crisis.

[1]  P. Pattison,et al.  9. Neighborhood-Based Models for Social Networks , 2002 .

[2]  Barry Wellman,et al.  For a social network analysis of computer networks: a sociological perspective on collaborative work and virtual community , 1996, SIGCPR '96.

[3]  Tom A. B. Snijders,et al.  A comparison of various approaches to the exponential random graph model: A reanalysis of 102 student networks in school classes , 2007, Soc. Networks.

[4]  Terrill L. Frantz,et al.  Communication Networks from the Enron Email Corpus “It's Always About the People. Enron is no Different” , 2005, Comput. Math. Organ. Theory.

[5]  R. Hanneman Introduction to Social Network Methods , 2001 .

[6]  Peng Wang,et al.  Recent developments in exponential random graph (p*) models for social networks , 2007, Soc. Networks.

[7]  T. Snijders,et al.  Conditional maximum likelihood estimation under various specifications of exponential random graph models , 2002 .

[8]  Kathleen M. Carley,et al.  Exploration of communication networks from the Enron email corpus , 2005 .

[9]  Vladimir Filkov,et al.  Exploring biological network structure using exponential random graph models , 2007, Bioinform..

[10]  Yvonne Rogers,et al.  Managing one's Social Network: Does Age Make a Difference? , 2003, INTERACT.

[11]  S. Wasserman,et al.  Logit models and logistic regressions for social networks: III. Valued relations , 1999 .

[12]  S. Wasserman,et al.  Logit models and logistic regressions for social networks: I. An introduction to Markov graphs andp , 1996 .

[13]  P. Pattison,et al.  New Specifications for Exponential Random Graph Models , 2006 .

[14]  D. Hunter,et al.  Inference in Curved Exponential Family Models for Networks , 2006 .

[15]  Lada A. Adamic,et al.  How to search a social network , 2005, Soc. Networks.

[16]  David Strauss On a general class of models for interaction , 1986 .

[17]  Garry Robins,et al.  An introduction to exponential random graph (p*) models for social networks , 2007, Soc. Networks.

[18]  Jafar Adibi,et al.  The Enron Email Dataset Database Schema and Brief Statistical Report , 2004 .

[19]  Tom A. B. Snijders,et al.  Markov Chain Monte Carlo Estimation of Exponential Random Graph Models , 2002, J. Soc. Struct..

[20]  Mohammed Shahadat Uddin,et al.  Towards A Scale Free Network Approach to Study Organizational Communication Network , 2010, PACIS.

[21]  A. J. Grimes,et al.  The Disintegration of an Organization: A Dialectical Analysis , 1987 .

[22]  Garry Robins,et al.  Missing data in networks: exponential random graph (p∗) models for networks with non-respondents , 2004, Soc. Networks.

[23]  Joseph G. Davis,et al.  Social Network Analysis and Organizational Disintegration: The Case of Enron Corporation , 2007, ICIS.

[24]  Steven M. Goodreau,et al.  Advances in exponential random graph (p*) models applied to a large social network , 2007, Soc. Networks.

[25]  D. J. Strauss,et al.  Pseudolikelihood Estimation for Social Networks , 1990 .