RE: [ona-prac] centrality
Ok…access to credit and preferred information sound like attributes to me unless of course they relate to a relationship i.e. who the credit is being provided t or whether the preferred information is flowing from an alter…..Ucinet does do valued calculations…but I think not for all metrics….if you don’t get a specific answer here try the Ucinet discussion group
From: firstname.lastname@example.org [mailto:email@example.com] On Behalf Of Umberto Medicamento
Sent: Monday, 26 March 2007 4:27 PM
Subject: RE: [ona-prac] centrality
Thank you very much Laurence.
Well, I am thinking about a network of firms that are
connected between them by one kind of relationships
and a network of th esame companies related to a set
of resources that they control inside the context
(e.g. access to credit, access to preferred
And I am referring to an "extended centrality"
(Everett and Borgatti) that should be applied directly
to two-mode networks without converting them to
standard network data.
I am still studying on it. Hence I am looking for some
previous experiences. Therefore thank you very much, I
will suddenly look for the articles you suggested.
Then one more thing. What about calculating centrality
with valued networks? Does Ucinet work with these data
--- Laurence Lock Lee <llocklee@optimice. com.au>
> Umberto.I'm not sure if I am interpreting youOn Behalf
> question correctly, but I
> think you are basically looking at two types of
> relationships. For example
> an "ownership" relationship would provide you with
> the resource centrality
> you are looking for. This may take the form of an
> affinity map if you were
> using say a board of directors' model where you are
> looking for board
> interlocks, which is a sort of partial ownership
> model. If you know who the
> owners are and ownership is shared you can model the
> shared ownership of a
> resource e.g. a company using affinity maps. The non
> relationship would be say an alliance relationship.
> If you had the data I
> guess you could compare the centrality of an actor
> within first an ownership
> network and then an alliance network.
> You will find some examples of ownership and board
> interlocks on our web
> site below:
> Laurence Lock Lee
> Optimice Pty Ltd
> Mob: 0407001628
> e-mail: <mailto:llocklee@optimice. com.au>
> llocklee@optimice. com.au
> www.optimice. com.au <http://www.optimice .com.au/>
> From: ona-prac@yahoogroup s.com
> [mailto:ona-prac@yahoogroup s.com]
> Of umberto77555____________ _________ _________ _________ _________ _________ _
> Sent: Monday, 26 March 2007 1:16 PM
> To: ona-prac@yahoogroup s.com
> Subject: [ona-prac] centrality
> Hi everybody,
> I have a couple of questions about centrality
> measure for single actors
> within a network.
> I am trying to understand if it is possible to
> measure centrality of an
> actor taking in account
> for the resources he controls.
> I have read about two-mode affiliation networks, but
> I am not sure if it
> could work, supose,
> in a network of firms and of the strategical
> resources they control.
> And, in an affermative case, if this measure
> considers at the same time both
> the amount of
> centrality coming from the "prestige" inside the
> actor-by-actor network and
> the amount
> coming from the actor-by- resource network.
> Then, I am looking for a measure of centrality using
> valued relationships.
> Thank you very much, and if some one is intersted I
> will be happy to share
> my experience.
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