inst/doc/ModelEvaluation.R

In DrBats: Data Representation: Bayesian Approach That's Sparse

## ---- echo = F----------------------------------------------------------------
rm(list=ls())

## ---- messages = F------------------------------------------------------------
require(DrBats)
mycol<-c("#ee204d", "#1f75fe", "#1cac78", "#ff7538", "#b4674d", "#926eae",
                 "#fce883", "#000000", "#78dbe2", "#6e5160", "#ff43a4")

data("toydata")
data("stanfit")

## -----------------------------------------------------------------------------
codafit <- coda.obj(stanfit)

## -----------------------------------------------------------------------------
post <- postdens(codafit, Y = toydata$Y.simul$Y, D = toydata$wlu$D, chain = 1)
hist(post, main = "Histogram of the posterior density", xlab = "Density")

## -----------------------------------------------------------------------------
beta.res <- visbeta(codafit, toydata$Y.simul$Y, toydata$wlu$D, chain = 1, axes = c(1, 2), quant = c(0.05, 0.95))

ggplot2::ggplot(beta.res$mean.df, ggplot2::aes(x = x, y = y, colour = ind)) +
  ggplot2::geom_point(ggplot2::aes(x = x, y = y, colour = ind)) +
  ggplot2::ggtitle("HMC estimate of the scores")

## -----------------------------------------------------------------------------
ggplot2::ggplot() +
  ggplot2::geom_point(data = beta.res$points.df, ggplot2::aes(x = x, y = y, colour = ind)) +
  ggplot2::geom_point(data = beta.res$mean.df, ggplot2::aes(x = x, y = y, colour = ind)) +
  ggplot2::ggtitle("Cloud of HMC estimates of the scores")

## -----------------------------------------------------------------------------
ggplot2::ggplot() +
  ggplot2::geom_path(data = beta.res$contour.df, ggplot2::aes(x = x, y = y, colour = ind)) +
  ggplot2::geom_point(data = beta.res$mean.df, ggplot2::aes(x = x, y = y, colour = ind)) +
  ggplot2::ggtitle("Convex hull of HMC estimates of the scores")