ergmProposal {ergm}R Documentation

Metropolis-Hastings Proposal Methods for ERGM MCMC

Description

ergm uses a Metropolis-Hastings (MH) algorithm to control the behavior of the Markov Chain Monte Carlo (MCMC) for sampling networks. The MCMC chain is intended to step around the sample space of possible networks, selecting a network at regular intervals to evaluate the statistics in the model. For each MCMC step, n (n=1 in the simple case) toggles are proposed to change the dyad(s) to the opposite value. The probability of accepting the proposed change is determined by the MH acceptance ratio. The role of the different MH methods implemented in ergm is to vary how the sets of dyads are selected for toggle proposals. This is used in some cases to improve the performance (speed and mixing) of the algorithm, and in other cases to constrain the sample space.

Implemented proposals for ergm models

This proposal is not referenced in the lookup table.

References

See Also

ergm package, ergm, ergmConstraint, ergm_proposal


[Package ergm version 4.2.2 Index]