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Dear Jay,

I'd recommend DEDICOM algorithm for pattern analysis in directed graph.
You may have a look at this answer
http://datascience.stackexchange.com/questions/6834/cluster-directed-graph-into-dag

Cheers,
Kasra

On Sun, Jan 8, 2017 at 10:49 PM, Hegde, Jay <[log in to unmask]> wrote:

> ***** To join INSNA, visit http://www.insna.org *****
>
> Hi Everyone,
>
>
>
> We have two NxN connectivity matrices that define *weighted*,
> *directional* interactions among the *same set of N nodes* under two
> different conditions, A and B. Since the interactions are directional, our
> connectivity matrices, while being square, are *asymmetric*.
>
>
>
> We want to identify the interactions that are significantly different
> between the two conditions.  That is, how do the nodes talk to each other
> under condition A that do not do under condition B?  Of course, we want to
> do more than just calculating the difference between the two matrices. For
> one thing, we know that if the matrices are symmetrical, there are toolkits
> for comparing them.
>
>
>
> But we’re not sure how to compare our asymmetric matrices. Any ideas about
> (1) how to do it, and (2) any toolkits that implement the solution?
>
>
>
> Thank you very much,
>
> Jay
>
>
>
> Jay Hegdé PhD
>
> Medical College of Georgia
>
> Augusta University (formerly Georgia Regents University)
>
> Augusta, GA 30912-2697
>
>
>
>
>
>
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