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Dear all, I have a problem when I was working on Age-Period-Cohort study in R. I tried to put constraint to two coefficients on age (so that to solve the identification problem due to linear dependency). But I...
Hi all, I encountered this problem with parameterization in R: I have two factors in a regression. how about if I want to set constraint so that for each factor, the sum of their coefficients equals to zero(instead of...
Dear Prof Brian Ripley and Graves, Thank you for your replies. MASS has been very helpful! Oana >From: Spencer Graves <spencer.graves at pdf.com> >To: Prof Brian Ripley <ripley at stats.ox.ac.uk> >CC: Oana Mocila <oanaom at...
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