Nothing
model.py.hom.eqcor <- function(prior.type = "unif", rank.prob = TRUE){
if(prior.type == "unif" & rank.prob){
modelstring<-"
model{
for(i in 1:len){
y[i] ~ dpois(py[i]*lambda[i])
lambda[i] <- exp(mu[t[i]] + vi[s[i], t[i]])
}
for(j in 1:nstudy){
vi[j,1:ntrt] ~ dmnorm(zeros[1:ntrt], T[1:ntrt, 1:ntrt])
}
for(j in 1:ntrt){
rate[j] <- exp(mu[j] + pow(sigma, 2)/2)
lograte[j] <- log(rate[j])
mu[j] ~ dnorm(0, 0.001)
}
sigma ~ dunif(0.0001, c)
for(j in 1:ntrt){
for(k in 1:ntrt){
T[j,k] <- 1/sigma^2*ifelse(j == k, diag, offdiag)
}
}
diag <- (1 + (ntrt - 2)*rho)/(1 + (ntrt - 2)*rho - (ntrt - 1)*rho^2)
offdiag <- (-rho/(1 + (ntrt - 2)*rho - (ntrt - 1)*rho^2))
rho ~ dunif(-1/(ntrt - 1), 0.9999)
for(j in 1:ntrt){
for(k in 1:ntrt){
ratio[j,k] <- rate[j]/rate[k]
logratio[j,k] <- log(ratio[j,k])
}
}
rk[1:ntrt] <- (ntrt + 1 - rank(rate[]))*ifelse(higher.better, 1, 0) + (rank(rate[]))*ifelse(higher.better, 0, 1)
for(i in 1:ntrt){
rank.prob[1:ntrt,i] <- equals(rk[], i)
}
}
"
}
if(prior.type == "unif" & !rank.prob){
modelstring<-"
model{
for(i in 1:len){
y[i] ~ dpois(py[i]*lambda[i])
lambda[i] <- exp(mu[t[i]] + vi[s[i], t[i]])
}
for(j in 1:nstudy){
vi[j,1:ntrt] ~ dmnorm(zeros[1:ntrt], T[1:ntrt, 1:ntrt])
}
for(j in 1:ntrt){
rate[j] <- exp(mu[j] + pow(sigma, 2)/2)
lograte[j] <- log(rate[j])
mu[j] ~ dnorm(0, 0.001)
}
sigma ~ dunif(0.0001, c)
for(j in 1:ntrt){
for(k in 1:ntrt){
T[j,k] <- 1/sigma^2*ifelse(j == k, diag, offdiag)
}
}
diag <- (1 + (ntrt - 2)*rho)/(1 + (ntrt - 2)*rho - (ntrt - 1)*rho^2)
offdiag <- (-rho/(1 + (ntrt - 2)*rho - (ntrt - 1)*rho^2))
rho ~ dunif(-1/(ntrt - 1), 0.9999)
for(j in 1:ntrt){
for(k in 1:ntrt){
ratio[j,k] <- rate[j]/rate[k]
logratio[j,k] <- log(ratio[j,k])
}
}
}
"
}
if(prior.type == "invgamma" & rank.prob){
modelstring<-"
model{
for(i in 1:len){
y[i] ~ dpois(py[i]*lambda[i])
lambda[i] <- exp(mu[t[i]] + vi[s[i], t[i]])
}
for(j in 1:nstudy){
vi[j,1:ntrt] ~ dmnorm(zeros[1:ntrt], T[1:ntrt, 1:ntrt])
}
for(j in 1:ntrt){
rate[j] <- exp(mu[j] + pow(sigma, 2)/2)
lograte[j] <- log(rate[j])
mu[j] ~ dnorm(0, 0.001)
}
sigma <- 1/sqrt(inv.sig.sq)
inv.sig.sq ~ dgamma(a, b)
for(j in 1:ntrt){
for(k in 1:ntrt){
T[j,k] <- 1/sigma^2*ifelse(j == k, diag, offdiag)
}
}
diag <- (1 + (ntrt - 2)*rho)/(1 + (ntrt - 2)*rho - (ntrt - 1)*rho^2)
offdiag <- (-rho/(1 + (ntrt - 2)*rho - (ntrt - 1)*rho^2))
rho ~ dunif(-1/(ntrt - 1), 0.9999)
for(j in 1:ntrt){
for(k in 1:ntrt){
ratio[j,k] <- rate[j]/rate[k]
logratio[j,k] <- log(ratio[j,k])
}
}
rk[1:ntrt] <- (ntrt + 1 - rank(rate[]))*ifelse(higher.better, 1, 0) + (rank(rate[]))*ifelse(higher.better, 0, 1)
for(i in 1:ntrt){
rank.prob[1:ntrt,i] <- equals(rk[], i)
}
}
"
}
if(prior.type == "invgamma" & !rank.prob){
modelstring<-"
model{
for(i in 1:len){
y[i] ~ dpois(py[i]*lambda[i])
lambda[i] <- exp(mu[t[i]] + vi[s[i], t[i]])
}
for(j in 1:nstudy){
vi[j,1:ntrt] ~ dmnorm(zeros[1:ntrt], T[1:ntrt,1:ntrt])
}
for(j in 1:ntrt){
rate[j] <- exp(mu[j] + pow(sigma, 2)/2)
lograte[j] <- log(rate[j])
mu[j] ~ dnorm(0, 0.001)
}
sigma <- 1/sqrt(inv.sig.sq)
inv.sig.sq ~ dgamma(a, b)
for(j in 1:ntrt){
for(k in 1:ntrt){
T[j,k] <- 1/sigma^2*ifelse(j == k, diag, offdiag)
}
}
diag <- (1 + (ntrt - 2)*rho)/(1 + (ntrt - 2)*rho - (ntrt - 1)*rho^2)
offdiag <- (-rho/(1 + (ntrt - 2)*rho - (ntrt - 1)*rho^2))
rho ~ dunif(-1/(ntrt - 1), 0.9999)
for(j in 1:ntrt){
for(k in 1:ntrt){
ratio[j,k] <- rate[j]/rate[k]
logratio[j,k] <- log(ratio[j,k])
}
}
}
"
}
if(!is.element(prior.type, c("unif", "invgamma"))){
stop("specified prior type is wrong.")
}
return(modelstring)
}
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