st: di-graphs for sppack

[László Sándor <sandorl@gmail.com>]

Hi,

I use Stata 11.2 on mac and Unix and would need some guidance on
social network analysis.

I have hopes to use -sppack- with a graph that is essentially
directed. It describes link with a strong chronology, and I think
previous peers of my current peers can generate spill-overs on me, but
I cannot affect them. Higher-order (indirect links) could come from
multiplying the symmetric (current) adjacency matrix with an
asymmetric analogue, I think. In the end, the resulting correlation
matrix cannot by symmetric. Is it a problem for -spreg-? Is it doable
via -spmat-, or only manually?

Sorry for not cracking this myself.

Thanks,

Laszlo


László Sándor
PhD candidate in Economics
Harvard University

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/