22 Aug
2013
22 Aug
'13
5:48 p.m.
I noted that Clarify's -nbreg- routine simulates alpha (the dispersion
parameter) by simulating ln(alpha) and then exponentiating each draw.
However, the results (predicted values) are different if one simulates
directly from alpha.
Is the first method preferable than the latter?
Thanks in advance.
Kind regads,
Javier
22 Aug
22 Aug
10:09 p.m.
simulating from ln(alpha) is probably better because it will be closer to
normal.
Gary
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On Thu, Aug 22, 2013 at 5:48 PM, Javier Marquez
<javier.marquezp(a)gmail.com>wrote;wrote:
I noted that Clarify's -nbreg- routine simulates
alpha (the dispersion
parameter) by simulating ln(alpha) and then exponentiating each draw.
However, the results (predicted values) are different if one simulates
directly from alpha.
Is the first method preferable than the latter?
Thanks in advance.
Kind regads,
Javier
3913
days inactive
3914
days old
clarify@lists.gking.harvard.edu
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Gary King -
Javier Marquez