On Fri, Sep 7, 2012 at 4:46 PM, Gary King <king@harvard.edu> wrote:

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
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Gary King - Albert J. Weatherhead III University Professor - Director, IQSS - Harvard University
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On Thu, Sep 6, 2012 at 6:27 PM, Patrick Lam <plam@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!

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Patrick Lam
Department of Government and Institute for Quantitative Social Science, Harvard University
http://www.people.fas.harvard.edu/~plam

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