Stata Programs Written By
Me and Available for Download
CDSIMEQ: The cdsimeq command implements the two-stage probit least squares estimation method described in Maddala (1983) for simultaneous equations models in which one of the endogenous variables is continuous and the other endogenous variable is dichotomous. The cdsimeq command implements all the necessary procedures for obtaining consistent estimates for the coefficients, as well as their corrected standard errors. Copyright 2003 by Stata Corporation.
(UPDATE: I have recently updated CDSIMEQ to allow a host of post estimation commands. Best way to get update is to type "findit cdsimeq" in Stata and follow the instructions.)A note of caution:just because the post estimation command is available does not mean it is appropriate. It is up the user to make sure it is.
SCOMPUTE: scompute computes the similarity scores (S) between two actors at time t using S as described in Signorino & Ritter (1999). This Stata program was written with Kevin Sweeney.
If the above does not work try this one