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See the below as well.  They are for cohesive subgroups, but the first piece has some for structural similarity as well

Frank, K. 1996. Mapping interactions within and between cohesive subgroups. Social Networks 18: 93-119.

Frank, K. A. and Yasumoto, J. 1996. "Embedding Subgroups in the Sociogram: Linking Theory and Image". Connections 19 (1): 43-57 .

Frank, K.A. & Yasumoto, J. (1998). "Linking Action to Social Structure within a System: Social Capital Within and Between Subgroups." American Journal of Sociology, Volume 104, No 3, pages 642-686

Krause, A., Frank, K.A., Mason, D.M., Ulanowicz, R.E. and Taylor, W.M. (2003). "Compartments exposed in food-web structure." Nature 426:282-285

See https://www.msu.edu/~kenfrank/research.htm#representation

 

 

-----Original Message-----
From: Social Networks Discussion Forum [mailto:[log in to unmask]] On Behalf Of Carl Nordlund
Sent: Wednesday, March 31, 2010 12:26 PM
To: [log in to unmask]
Subject: Re: MDS visualization of CONCOR output

 

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References:

 

 

Sim, F. M. and Schwartz, M. R. 1979. /Does Concor Find Positions?/ Paper

presented at the Annual Meeting of the Eastern Sociological Society, New

York.

 

Doreian, P. 1988. Using Multiple Network Analytic Tools for a Single

Social Network. /Social Networks/, 10, pp. 287-312.

 

Faust, K. 1988. Comparison of Methods for Positional Analysis:

Structural and General Equivalences. /Social Networks/, 10(4), pp. 313-341.

 

Schwartz, J. E. 1977. An Examination of CONCOR and Related Methods for

Blocking Sociometric Data. /Sociological Methodology/, 8, pp. 255-282.

 

 

 

 

Semenov Alexander wrote:

> Thanks!

> I have one more question - can you give me full citations of the

> mentioned articles? I know only Doreian's article and can't identify

> others.

> Alexander.

> 

> 2010/3/31 Carl Nordlund <[log in to unmask]

> <mailto:[log in to unmask]>>

> 

>     Hi,

>     Even though the Concor algorithm can provide results that are

>     intuitive, there has been quite a lot of critique raised against

>     it (e.g. Sim and Schwartz 1979; Doreian 1988; Faust 1988). One of

>     its founders has explicitly said that there is "[no] justification

>     for advocating the iteration of [correlance coefficients] matrices

>     as a method for analysis of data" (Schwartz 1977:266ff). Tha

>     algorithm always produced 2 splits, and makes subsequent

>     partitions quite arbitrary when it comes to which of these splits

>     to split further.

> 

>     If there are strong arguments to use structural equivalence,

>     perhaps it would be better to simply use the correlance matrix

>     (distance-based or Pearson) and use MDS to plot these in two

>     dimensions, subsequently interpreting this in combination with a

>     dendrogram. Depending on the data, and what you are looking for,

>     you should also look into regular equivalence (if that specific

>     sociological notion of "roles" is applicable to your particular

>     study).

> 

>     I might be wrong, but it was quite some time since I last saw a

>     solid argument on the advantages of using the Concor algorithm.

> 

>     Yours,

>     Carl

> 

>     Semenov Alexander wrote:

> 

>         ***** To join INSNA, visit http://www.insna.org *****

> 

>            I guess you have your data already clustered by CONCOR, and you

>            would like

>            to present the reduced blockmatrix by MDS?

> 

>         When I run MDS directly in NetMiner it draws me a map with

>         only a few visible actors. It seems like 90% of nodes are

>         exactly in the centre and one-two are at the end of each axis.

>         It's almost imposible to interpret such picture.  But when I

>         check MDS as an output option in CONCOR, it shows me nice

>         scatter plot with 3 distinctive axis and some dispersion. This

>         picture corresponds with my substantive assumptions and very

>         interesting for interpretation.

> 

>            Anyhow, you will be much more exposed to criticism for adopting

>            CONCOR, than

>            for using MDS...

> 

>         Why? Unfortunatelly, I really doubt it =( Here in Russia there

>         is only one thesis on SNA and only one book about it. And the

>         author of both of them is my tutor. My search for SNA in local

>         sociological journals revealed only 4 articles. So, this

>         listserve is the only place for me to search an advice. That's

>         why I'm asking such a noob questions.

>         Alexander.

> 

> 

>         2010/3/31 Balazs Vedres <[log in to unmask]

>         <mailto:[log in to unmask]> <mailto:[log in to unmask]

>         <mailto:[log in to unmask]>>>

> 

> 

>            *****  To join INSNA, visit http://www.insna.org  *****

> 

>            "rarely used" - I think it is very often used.

>            I guess you have your data already clustered by CONCOR, and you

>            would like

>            to present the reduced blockmatrix by MDS? That is fine.

>            You can also use MDS to represent the original structural

>            similarity measure

>            matrix, and possibly include the centroids of CONCOR blocks.

>            Anyhow, you will be much more exposed to criticism for adopting

>            CONCOR, than

>            for using MDS...

> 

>            -----Original Message-----

>            From: Social Networks Discussion Forum [mailto:

> 

> 

> 

>     --

>     Carl Nordlund, BA, PhD student

>     carl.nordlund(at)hek.lu.se <http://hek.lu.se>

>     Human Ecology Division, Lund university

>     www.hek.lu.se <http://www.hek.lu.se>

> 

> 

> 

> 

> --

> Alexander Semenov.

> MA student

> Faculty of Sociology

> Moscow School of Social and Economic Sciences (MSSES)

> http://www.msses.ru/English/index.html

> 

> Graduate Student in Sociology at

> State University - Higher School of Economics

> http://www.hse.ru/eng

 

 

--

Carl Nordlund, BA, PhD student

carl.nordlund(at)hek.lu.se

Human Ecology Division, Lund university

www.hek.lu.se

 

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