[statnet_help] fragmented bipartite network...

[Tom Kraft]

Hi Harald,

I do not fully understand what makes this a bipartite network based on the
description you have given, but given your attached graphs of the observed
and simulated networks it seems likely that you are failing to capture
important homophily processes. One example would be homophily within
companies (or some other trait), which seems like an obvious candidate that
could lead to the distinct clustering you see in your observed network.
Similarly there may be other important individual attributes beyond the
structural properties you have included in your model.

Forgive me if I am misunderstanding your question,
Tom

On Thu, Nov 30, 2023 at 10:59 AM Harald Waxenecker <waxenecker at fss.muni.cz>
wrote:


> Dear ‘statnet community’,

>

>

>

> Our research focuses on tie formation and elite cohesion, specifically

> examining interlocking directorates and kinship relations. The dependent

> bipartite business network comprises 6,902 individuals and 5,178 companies,

> exhibiting sparsity (density = 0.00012) and fragmentation with 4,455

> components, including 3,850 isolates in the first mode (persons). The

> attached documents contain descriptives and the component size distribution

> from the observed network.

>

>

>

> The fragmented structure is important, as other network layers, like

> kinship relations, are expected to contribute to the cohesion of this

> business network. We apply ERGM to model these processes, but we struggle

> to capture the fragmented structure of the observed network. The component

> size distribution of the simulated network differs significantly. In

> addition, the goodness-of-fit (GOF) for k-stars (in both modes) and

> geodesic distances (Inf) shows significant results. All these results are

> also attached.

>

>

>

> We've explored various options, including constraints, MCMC propositions,

> and simulated annealing, but haven't achieved success. Please, we would

> like to ask for your help to improve our model. Thank you!

>

>

>

> Kind regards,

>

> Harald

>

>

>

>

>

>

>

> ---

>

>

>

> *Harald Waxenecker *

>

> *Masaryk University | Faculty of social studies*

> Department of Environment Studies

> A: Jostova 10 | 602 00 Brno | Czech Republic

> E: waxenecker at fss.muni.cz

>

>

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>

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