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"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:[log in to unmask]] On
Behalf Of Martin Everett
Sent: Wednesday, March 31, 2010 9:12 AM
To: [log in to unmask]
Subject: Re: MDS visualization of CONCOR output

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Hi
There is no problem using MDS provided the stress level is low so that  
the picture is a good representation of the data. The original  
blockmodelling papers used MDS to cluster the actors based on SE. MDS  
has it strengths and weakneses as does all the clustering methods.



Quoting Semenov Alexander <[log in to unmask]>:

> *****  To join INSNA, visit http://www.insna.org  *****
>
> Hello everybody,
> I have the following question. Is it appropriate to use MDS visualization
of
> structural equivalence procedures like CONCOR. The case is that it's an
> output option of NetMiner CONCOR procedure, which I'm using. But today saw
t
> the following phrase in Hanneman's book:
>
>> p. 106: "...one such approach is multidimensional scaling, but we will
not
>> discuss it here -- as it is rarely
>> used for making sense of structural equivalence data."
>>
> So, now I'm in doubt. Is it valid to visualize CONCOR with MDS or I have
to
> choose other technique?
> Thanks in advance.
> Alexander.
> --
> 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
>
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