Hi Patrick,
Other than what Gary describes, we do not have any way to set different
bounds for each observation currently.
Cheers,
matt.
~~~~~~~~~~~
Matthew Blackwell
Assistant Professor of Political Science
University of Rochester
url:
you can do a multivariate transformation. e.g., if
you have X, Y as your
variables, you could do a=X+Y and b=X-Y. then if you know b > 0, you could
enter into amelia say B=ln(b) and then no matter what value Amelia imputes
for B, you'd be ok
Gary
--
*Gary King* - Albert J. Weatherhead III University Professor - Director, IQSS
<http://iq.harvard.edu/>- Harvard University
GKing.Harvard.edu <http://gking.harvard.edu/> - King(a)Harvard.edu -
@kinggary <http://twitter.com/kinggary> - 617-500-7570 - Asst 495-9271 -
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On Thu, Sep 6, 2012 at 6:27 PM, Patrick Lam <plam(a)fas.harvard.edu> wrote:
Is there a way to bound variables via
relationships with other variables
in the dataset when multiply imputing with Amelia? For example, if we have
a household income variable and a household savings variable (both with
some missingness) in our dataset, is there a way to specify that savings
must be less than income for each observation in the imputed datasets?
Priors and logical bounds currently in Amelia don't seem like they are set
up to do this exactly.
Thanks!
--
Patrick Lam
Department of Government and Institute for Quantitative Social Science,
Harvard University
http://www.people.fas.harvard.edu/~plam
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