š What This Paper Does
Introduces Dynamic Network Logistic Regression (a special case of Temporal Exponential Random Graph Models) as a framework to implement decisionātheoretic models of network dynamics in panel data. Practical heuristics for model building and assessment are provided, and the approach is illustrated with a longitudinal blog citation network sampled during the 2004 U.S. presidential election cycle.
š Tracking Blog Links Across the 2004 Campaign
Uses a longitudinal sample of all Democratic National Convention and Republican National Conventionādesignated blog citation networks collected during the 2004 campaign. The case is highlighted because it captures the institutional emergence of Internetābased mediaāblogs and social networking sitesāas recognized features of the American political landscape.
š¬ How the Analysis Works
Applies Dynamic Network Logistic Regression techniques to model the binary choice of whether one blog cites another over time. The analytic strategy and model assessment combine likelihood-based selection and simulation checks. The analysis tests competing mechanisms thought to shape citation choices, including:
- strategic mechanisms
- institutional mechanisms
- balanceātheoretic mechanisms
- exogenous influences such as seasonality and discrete political events
Practical guidance is offered on model specification, selection, and adequacy assessment in panel network settings.
š Key Results and Model Evaluation
Devianceābased model selection criteria and simulationābased model adequacy tests are used to compare specifications and to identify the combination of processes that best characterizes blog citation choice behavior over time. The approach demonstrates how dynamic logisticāchoice models can recover the mix of endogenous and exogenous influences on link formation in temporal network data.
š” Why It Matters
The paper shows how a decisionātheoretic, panelādata approach to dynamic networks can be operationalized and assessed in practice. The method is directly applicable to studying political communication in online media and other settings where actors repeatedly choose links over time.