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st: ML maximize error message

From   antonio martuscelli <>
Subject   st: ML maximize error message
Date   Sun, 5 Jun 2011 13:04:17 +0100

Dear all,

I am trying to maximize a complex likelihood function and when I use
the dfp or bfgs techniques I get the error message below. This only
happens if I use those techniques and not if I use the newton-raphson
(in which case it is just very slow). Any idea what is the reason?

Thanks a lot.

. ml maximize, difficult noclear
initial:       log likelihood = -4341.6282
rescale:    log likelihood = -4341.6282
rescale eq:    log likelihood = -4339.4255
(setting technique to bfgs)

 *:  3200  conformability error
   opt__looputil_step():     -  function returned error
   opt__loop_cycle():        -  function returned error
           _moptimize():       -  function returned error
          Mopt_maxmin():    -  function returned error
                <istmt>:         -  function returned error
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