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295,14
2005 Dec 08
1
Constraint on coefficient when fitting with lm, glm etc ...
Dear R-users,
I would like to know if there is any way to constraints optimized parameters
using the function lm, glm or others that are written in the form:
Lm( formula, data ...)
As I understand, formula are of the type y ~ X1 +X2+ ... Xi (where Y, X1, X2
..Xi are vectors). In my case I would like the estimates of this linear
combination computed with lm to be positives.
I haven't found