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st: mvprobit replication code

From   Zhi Su <>
Subject   st: mvprobit replication code
Date   Sun, 15 May 2011 10:49:39 -0400

Following Cappellari and Jenkins (2006) for trivariate equation, I
write some codes for four Probit equations.  And I get the following
errors when I use "ml model lf" to run the "ml program" I write.

"initial:       log likelihood = -1464.1231
rescale:       log likelihood = -1464.1231
rescale eq:    log likelihood = -1464.1231
could not calculate numerical derivatives
flat or discontinuous region encountered
How to solve this error?


Zhi Su
348 Holmes Hall
Northeastern University
360 Huntington Avenue
Boston, MA 02115
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