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I support what Xi writes. Read the Siena manual for more details!
Further, you should note that 650 nodes with 8000 or 10,000 ties is a
lot for Siena. It will take a lot of computing time; and to make the
analysis meaningful you should have a lot of information concerning
shared contexts, attributes, etc., as predictors for ties. We are
working on a model that is more plausible also for larger networks but
it will be a while before this is available.
Apparently you have been using the older version Siena 3. Currently
Siena is available as an R package, which also allows use of multiple
processors, which will of course speed up computations. Information
about the R version of Siena is at the Siena website,
Xi Zhu wrote:
> ---------------------- Information from the mail header -----------------------
> Sender: Social Networks Discussion Forum <[log in to unmask]>
> Poster: Xi Zhu <[log in to unmask]>
> Subject: Re: Problems with StOCNET, SIENA Module
> Content-Type: text/plain; charset=ISO-8859-1
> ***** To join INSNA, visit http://www.insna.org *****
> Hi Thomas,
> As I know, StOCNet only takes adjacency matrices as input data. This means
> that you need to recode the edgelist into adjacency matrices saved in ASCII
> format (dat or txt files). Each network should be presented by n lines with
> n integer numbers separated by blanks, and each line is ended by a hard
> return. No node name should appear in an adjacency matrix. If you code node
> names as integers, they will be considered as representing relationships.
> Since you want to do longditudinal network analysis (using SIENA), you also
> need to save each observation of the network (e.g., network of each year) as
> a separate file. StOCNet will allow you to use multiple observations in one
> analytical session.
> You may want to read StOCNet and SIENA manuals. You can find them on StOCNet
> website's Downloads section. Here is the URL link:
> Hope this would help.
> On Wed, Dec 23, 2009 at 3:58 AM, Thomas Plotkowiak <[log in to unmask]> wrote:
>> ***** To join INSNA, visit http://www.insna.org ***** Hi,
>> A few members of the SOCNET mailinglist pointed me to SIENA for
>> longitudonal social network analysis. I don't know if my posting is right
>> here, but I am having problems importing two nets of the size of approx 650
>> nodes into the module.
>> When I do the SIENA data specification and add those two networks into
>> "Dep. networks in seq. order" either nothing happens if I click ok, or I am
>> getting the error "Access violation at adress 004E2E40 in module
>> "StOCNet.exe. Read of adress 00DF0008."
>> My data is saved in the edgelist format which is available since v. 4 and
>> looks like this:
>> approx 8k rows.
>> Should i re-encode the node names into integers, or ist the edgelist
>> support only beta? Maybe somebody had some luck with this.
>> Thomas Plotkowiak
>> Research Assistant
>> Institute for Media and Communications Management
>> St. Gallen
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Tom A.B. Snijders
Professor of Statistics in the Social Sciences
University of Oxford
Professor of Statistics and Methodology
Department of Sociology, University of Groningen
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