walk.bwd {ess}

Stepwise backward selection

Description

Stepwise backward selection in decomposable graphical models

Usage

## S3 method for class 'bwd'
walk(x, df, q = 0.5, thres = 5)

Arguments

x

gengraph

df

data.frame

q

Penalty term in the stopping criterion (0 = AIC and 1 = BIC)

thres

A threshold mechanism for choosing between two different ways of calculating the entropy. Can Speed up the procedure with the "correct" value.

Details

A bwd object can be created using the gengraph constructor with type = "bwd"

Value

A bwd object; a subclass of gengraph) used for backward selection.

See Also

fit_graph, walk.fwd, gengraph

Examples

d <- derma[, 10:25]

g <- gengraph(d, type = "bwd")
s <- walk(g, d)
print(s)
plot(s)
adj_lst(s)
adj_mat(s)