Parameters restriction

[joaombdacosta]

Hi Andrea. Amazing work with the package.

Is there a way to restrict parameters using others? For example, suppose that my equation is Y = a1X1+a2X2 + (1-a1-a2)X3. Can I impose this kind of restriction?

Thank you!

[andrea-luciani]

Hi Andrea. Amazing work with the package.

Is there a way to restrict parameters using others? For example, suppose that my equation is Y = a1X1+a2X2 + (1-a1-a2)X3. Can I impose this kind of restriction?

Thank you!

Hi @joaombdacosta

take a look at the following:

library(bimets)

X1 <- TSERIES(rnorm(1:10),START=c(2000,1),FREQ='M')
X2 <- TSERIES(rnorm(1:10),START=c(2000,1),FREQ='M')
X3 <- TSERIES(rnorm(1:10),START=c(2000,1),FREQ='M')
Y  <- TSERIES(X1+X2+X3+rnorm(1:10),START=c(2000,1),FREQ='M')

model.def <- "
MODEL

BEHAVIORAL> Y 
EQ> Y = a1 * X1 + a2 * X2 + a3 * X3
COEFF> a1 a2 a3
RESTRICT> a1+a2+a3=1

END
"

model <- LOAD_MODEL(modelText = model.def)
model <- LOAD_MODEL_DATA(model, modelData = list(X1=X1, X2=X2, X3=X3, Y=Y))

model <- ESTIMATE(model, TSRANGE = c(2000,1,2000,10))

[joaombdacosta]

Thanks!

Changing the subject, the package does not provide impulse response functions?