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所以我正在尝试做这个贝叶斯数据建模项目,然后我回到了我在 rjags 上的贝叶斯统计课上的笔记,我的教授在那里学习了一个非常相似的模型。我能够毫无问题地运行那个,但是当我将它调整到我的模型时,我的输出出现错误。

这是我的代码:

library(rjags)
set.seed(12196)

# Number of bear reports
Y <- black_bears$Y # Number of surveys saying there was a reported bear sighting
N <- black_bears$N # Number of surveys submitted on whether a bear was seen or not
q <- Y/N # proportion of the non-bear sightings submitted

n <- length(Y)
X <- log(q)-log(1-q) # X = logit(q)

data   <- list(Y=Y,N=N,X=X)
params <- c("beta")

model_string <- textConnection("model{
                           # Likelihood
                           
                           for (i in 1:n){
                           Y[i] ~ dbinom(p[i], N[i])
                           logit(p[i] <- beta[1] + beta[2]*X[i])
                           }
                           
                           # Priors
                           beta[1] ~ dnorm(0, 0.01)
                           beta[2] ~ dnorm(0, 0.01)
                           }")

model <- jags.model(model_string,data = data, n.chains=2,quiet=TRUE)
update(model, 10000, progress.bar="none")
samples1 <- coda.samples(model, variable.names=params, thin=5, n.iter=20000, progress.bar="none")

plot(samples1)

我收到了这个错误: rjags 错误

任何和所有的帮助表示赞赏。谢谢!

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