plot.nonparametric_naive_bayes {naivebayes} | R Documentation |
Plot Method for nonparametric_naive_bayes Objects
Description
Plot method for objects of class "nonparametric_naive_bayes"
designed for a quick look at the estimated class marginal or class conditional densities of metric predictors.
Usage
## S3 method for class 'nonparametric_naive_bayes'
plot(x, which = NULL, ask = FALSE, legend = TRUE,
legend.box = FALSE, arg.num = list(),
prob = c("marginal", "conditional"), ...)
Arguments
x |
object of class inheriting from |
which |
variables to be plotted (all by default). This can be any valid indexing vector or vector containing names of variables. |
ask |
logical; if |
legend |
logical; if |
legend.box |
logical; if |
arg.num |
other parameters to be passed as a named list to |
prob |
character; if "marginal" then marginal distributions of predictor variables for each class are visualised and if "conditional" then the class conditional distributions of predictor variables are depicted. By default, prob="marginal". |
... |
not used. |
Details
Estimated class marginal or class conditional densities are visualised by matplot
.
The parameter prob
controls the kind of probabilities to be visualized for each individual predictor Xi
. It can take on two values:
"marginal":
P(Xi|class) * P(class)
"conditional":
P(Xi|class)
Author(s)
Michal Majka, michalmajka@hotmail.com
See Also
naive_bayes
, nonparametric_naive_bayes
predict.nonparametric_naive_bayes
, tables
, get_cond_dist
Examples
data(iris)
y <- iris[[5]]
M <- as.matrix(iris[-5])
### Train the Non-Parametric Naive Bayes with custom prior
prior <- c(0.1,0.3,0.6)
nnb <- nonparametric_naive_bayes(x = M, y = y, prior = prior)
nnb2 <- nonparametric_naive_bayes(x = M, y = y, prior = prior, adjust = 1.5)
nnb3 <- nonparametric_naive_bayes(x = M, y = y, prior = prior, bw = "ucv")
# Visualize estimated class conditional densities corresponding
# to the first feature
plot(nnb, which = 1, prob = "conditional")
plot(nnb2, which = 1, prob = "cond")
plot(nnb3, which = 1, prob = "c")
# Visualize estimated class marginal densities corresponding
# to the first feature
plot(nnb, which = 1)
plot(nnb2, which = 1)
plot(nnb3, which = 1)