Hello,
Is there any way to bias the nested DC-SBM model towards assortative partitions?
I've tested PPBlockState, but as far as I understand it distinguishes groups
only by internal vs external density via the Planted Partition model: far more
restrictive than the full SBM. I'm wondering if there is a middle-ground where
you have a SBM but the groups are biased (required?) to be assortative.
I searched for something like this and found a couple papers: "A Regularized
Stochastic Block Model for the robust community detection in complex networks"
by Lu et al and "Assortative-Constrained Stochastic Block Models" by Gribel et
al. Unfortunately neither uses priors to prevent overfitting, a nested
formulation to address resolution limit, etc. The latter paper restricts the
intra-block connection probabilities to be greater than inter-block connection
probabilities. I'm not sure if there is an equivalent idea for the
microcanonical model. The only idea I can think of would be to modify the
likelihood in some way to make intra-block edges more likely.
Any guidance is appreciated,
Thank you
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