[Limdep Nlogit List] Parameter constrain

[Liren Zhou]

Hello,

I am trying to estimate a simple MNL model using following code. I need
to constrain coefficients for some variables. For example, set the
coefficient of travel time to 0.07. Can anybody tell me how it works?

Thanks a lot in advance!
Leren


NLOGIT; LHS = P_HBO, CASENUM, P_INDEX

; CHOICES = AM, MD, PM, NT

; MODEL: U(AM) =Time*Time_HBO/

U(MD) = MD_C + MD_SR3*MODE_SR3 + Time*TIME_HBO + MD_SIZE*HH_SIZE/

U(PM) = PM_C + PM_SR3*MODE_SR3 + Time*TIME_HBO + PM1_SIZE*HH_SIZE/

U(NT) = NT_C + NT_SR3*MODE_SR3 + Time*Time_HBO + NT_SIZE*HH_SIZE$