Hi,
Does anyone know how to code bivariate probit model in WinBugs? Basically,
the model is as follows:
Y1 and Y2 are observed binary variables. Z is a vector of latent
variables Z1 and Z2. Zj>0 if Yj=1, Zj<=0 if Yj=0. (j=1,2). Z~MVN
(mu,sigma).
I tried code:
for( i in 1 : N ) {
Z[i , 1:2] ~ dmnorm(mu[ ], Sigma[ , ])
for(j in 1:2){
y[i,j]<-step(Z[i,j])
}
}
Winbugs won't compile the above code. The error message says "multiple
definitions of node y[1,1]"
Anyone has the code or examples? Thanks.
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