使用rjags定义条件线性高斯网络
我正在努力使用使用rjags定义条件线性高斯网络,r,bayesian,bayesian-networks,rjags,R,Bayesian,Bayesian Networks,Rjags,我正在努力使用rjags定义一个条件线性高斯贝叶斯网络。 (clg BN由同时具有连续正常值和离散父节点(预测值)的连续子节点(结果)定义) 对于下面的网络,A是离散的,D和E是连续的: 对于rjags模型,我希望在值节点Atakes:pseudo code>上定义节点E的参数 model { A ~ dcat(c(0.0948, 0.9052 )) D ~ dnorm(11.87054, 1/1.503111^2) if A==a then E ~ dnorm(6.5583
rjags
定义一个条件线性高斯贝叶斯网络。
(clg BN由同时具有连续正常值和离散父节点(预测值)的连续子节点(结果)定义)
对于下面的网络,A是离散的,D和E是连续的:
对于rjags
模型,我希望在值节点A
takes:pseudo code>上定义节点E
的参数
model {
A ~ dcat(c(0.0948, 0.9052 ))
D ~ dnorm(11.87054, 1/1.503111^2)
if A==a then E ~ dnorm(6.558366 + 1.180965*D, 1/2.960002^2)
if A==b then E ~ dnorm(3.370021 + 1.532289*D, 1/6.554402^2)
}
我可以通过使用下面的代码来做一些事情,但是它会很快被更多的预测和分类级别弄糊涂
library(rjags)
model <- textConnection("model {
A ~ dcat(c(0.0948, 0.9052 ))
D ~ dnorm(11.87054, 1/1.503111^2)
int = 6.558366 - (A==2)*(6.558366 - 3.370021)
slope = 1.180965 - (A==2)*(1.180965 - 1.532289)
sig = 2.960002 - (A==2)*(2.960002 - 6.554402)
E ~ dnorm(int + slope*D, 1/sig^2)
}")
jg <- jags.model(model, n.adapt = 1000
您只需要将变量A用作索引参数:
library('rjags')
model <- "
model {
A ~ dcat(c(0.0948, 0.9052 ))
D ~ dnorm(11.87054, 1/1.503111^2)
ints <- c(6.558366, 3.370021)
int <- ints[A]
slopes <- c(1.180965, 1.532289)
slope <- slopes[A]
sigs <- c(2.960002, 6.554402)
sig <- sigs[A]
E ~ dnorm(int + slope*D, 1/sig^2)
}
"
jg <- jags.model(textConnection(model), n.adapt = 1000)
library('rjags'))
非常感谢,这正是我所希望的。
library('rjags')
model <- "
model {
A ~ dcat(c(0.0948, 0.9052 ))
D ~ dnorm(11.87054, 1/1.503111^2)
ints <- c(6.558366, 3.370021)
int <- ints[A]
slopes <- c(1.180965, 1.532289)
slope <- slopes[A]
sigs <- c(2.960002, 6.554402)
sig <- sigs[A]
E ~ dnorm(int + slope*D, 1/sig^2)
}
"
jg <- jags.model(textConnection(model), n.adapt = 1000)
library("runjags")
model <- "
model {
A ~ dcat(catprobs)
D ~ dnorm(Dmu, Dprec)
int <- ints[A]
slope <- slopes[A]
sig <- sigs[A]
E ~ dnorm(int + slope*D, 1/sig^2)
#data# catprobs, Dmu, Dprec, ints, slopes, sigs
#monitor# A, D, E
}
"
catprobs <- c(0.0948, 0.9052)
Dmu <- 11.87054
Dprec <- 1/1.503111^2
ints <- c(6.558366, 3.370021)
slopes <- c(1.180965, 1.532289)
sigs <- c(2.960002, 6.554402)
results <- run.jags(model)
results