[R] How can I do a generic specification in multiple logistic regression

I use the function multinom to estimate a multiple logistic regression. but I need one coefficient as generic. How can I do this? Or is it possible to do this with an another function? As example this is what I get: Call: multinom(formula = choice ~ time + costs, data = DATA) Coefficie

[R] Generic attribute in multinom function

Hello, I try estimate a MNL model but I need one coefficient as generic. How can I get the same coefficient for all alternatives? As example Call: multinom(formula = choice ~ time + costs, data = DATA) Coefficients: (Intercept)time costs 14.79-0.28

[R] Generic attribute in multinom function

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