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I have bipartite network data. But some individuals claim to be linked to many, many organizations. So almost all orgs are connected to each other. How can I ask UCINET to make two orgs linked iff # of co-memberships > X, where X is some threshold?

Written by fabiorojas

May 17, 2011 at 12:40 am

4 Responses

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  1. That’s easy to do in Pajek (Net>Transform>Remove>Lines with Value), so you could export and do it there. Then if you absolutely want, transfer back. But I have no idea how to do it *within* UCINet.

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    jimi

    May 17, 2011 at 2:42 am

  2. Can you take the one mode projection of orgs linked by people and then dichotomize it on the threshold value? Dichotomize will give you a tie for all orgs with>x co-members and no tie for those lower.

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    Jordi

    May 17, 2011 at 3:00 am

  3. Assuming you’ve projected the bipartite network into a one-mode affiliation matrix:

    Transform > Dichotomize:
    Cut-Off operator==GT
    Cut-Off Value==try different values until it becomes sufficiently sparse. Once you find a threshold, you can Transform > Recode the values below the threshold to 0.

    Latest version has “Dichotomize interactive” which I haven’t tried yet.

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    Brian Keegan

    May 17, 2011 at 3:33 am

  4. Thanks, Brian, I’ll check to see if my version of UCINET has that.

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    fabiorojas

    May 17, 2011 at 4:05 am


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