Using aster analysis to fit a nonlinear model?

[Xiaojing Wei]

Hello everyone, 

 

I am trying to fit the following model to some fitness data (survival and plant size measured over multiple years):

Responses = 1/w*(a*1/w^2*(t-m)^2+b*1/w*(t-m)+c)+h

In the model, t is a known predictor variable, everything else on the right side of the equation (i.e. w, m, h, a, b, c) are unknown parameters.

 

My question is that can I use aster analysis to fit this model? I guess the answer is no because the model seems to me like a nonlinear model, but I am not quite sure and would appreciate any feedback. 

Thanks!

 

Xiaojing

[geyer]

Right.  Aster only does exponential family models.  Models have to be linear in the canonical parameters.

[Xiaojing Wei]

Hi Charlie,

Thanks for the response!

Xiaojing

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Xiaojing Wei, Ph.D.

Dept. of Ecology, Evolution, and Behavior

University of Minnesota 

Rm. 215 Ecology Bldg.

1987 Upper Buford Cir. 

St. Paul, 55108, USA