observations in multiple groups
Could you define your "groups" with class pairs as units? Reinhold Kliegl
On Thu, Jun 9, 2011 at 5:39 AM, Jeroen Ooms <jeroen.ooms at stat.ucla.edu> wrote:
The standard assumption in multilevel modelling seems to be that every observation is in 1 group. However, I have an application in which every observation is in 2 (exchangable) groups. More precisely, I have k groups and k^2 observations, and there is one observations for every combination of groups. The groups are unordered, so I can't do e.g. 1 + (1| firstgroup) + (1|secondgroup). Is there a way to model this with lme4? So the schoolbook example would be a hierarchical model with children within classes, however every child is in two classes at the same time. ? ? ? ?[[alternative HTML version deleted]]
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