Formation and Dissolution Constraints for Exponential Family Random Graph Models


This page describes the network sample space constraints that are included with the tergm package. For more information, and instructions for using constraints, see ergm-constraints and ergm.

Constraints implemented in the tergm package


The Formation Constraint: Preserve all ties in network nw. Only dyads that are not ties in nw may be changed.


The Dissolution Constraint: Prevent all nonties in network nw. Only dyads that have ties in nw may be changed.


Krivitsky PN, Handcock MS (2010). A Separable Model for Dynamic Networks.

Goodreau SM, Handcock MS, Hunter DR, Butts CT, Morris M (2008a). A statnet Tutorial. Journal of Statistical Software, 24(8).

Hunter, D. R. and Handcock, M. S. (2006) Inference in curved exponential family models for networks, Journal of Computational and Graphical Statistics.

Hunter DR, Handcock MS, Butts CT, Goodreau SM, Morris M (2008b). ergm: A Package to Fit, Simulate and Diagnose Exponential-Family Models for Networks. Journal of Statistical Software, 24(3).

Krivitsky PN (2012). Exponential-Family Random Graph Models for Valued Networks. Electronic Journal of Statistics, 2012, 6, 1100-1128. doi:10.1214/12-EJS696

Morris M, Handcock MS, Hunter DR (2008). Specification of Exponential-Family Random Graph Models: Terms and Computational Aspects. Journal of Statistical Software, 24(4).

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