I think it's going to be a problem to have different sized groups in
your second model. ?corSymm says that a general correlation matrix is
being estimated (i.e. the correlation between each pair of observations
is being estimated - for this to be meaningful across groups you need
the jth price
Dear Help list,
I am relatively new to the mgcv package, which I am using to model prices of
housing transactions as a function of the characteristics of a home and a
neighborhood. I have several smooth terms to capture price evolution over time,
but also to non-parametrically fit the functiona
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