| Zero {demest} | R Documentation |
Specify a prior for a main effect or interaction in which
parameter[j] = 0.
Zero()
In some cases, as with a dimension representing upper and lower
Lexis triangles, setting all elements of the main effect or interaction
to zero may make substantive sense. In other cases, a Zero prior
to reduce the number of terms being estimated, while conforming
to that requirement from Model that all terms marginal
to an interaction be included in a model.
An object of class SpecZero.
Known can be used to create a prior that
fixes the main effect or interaction at values other than 0.
Zero()