cutoff.ctx_node: Cut off value for pruning a node in the context tree of a...

In mixvlmc: Variable Length Markov Chains with Covariates

Cut off value for pruning a node in the context tree of a VLMC

Description

This function returns the cut off value associated to a specific node in the context tree interpreted as a VLMC. The node is represented by a ctx_node object as returned by find_sequence() or contexts(). For details, see cutoff.vlmc().

Usage

## S3 method for class 'ctx_node'
cutoff(model, scale = c("quantile", "native"), raw = FALSE, ...)

Arguments

model	a ctx_node object as returned by find_sequence()
scale	specify whether the results should be "native" log likelihood ratio values or expressed in a "quantile" scale of a chi-squared distribution (defaults to "quantile").
raw	specify whether the returned values should be limit values computed in the model or modified values that guarantee pruning (see details in cutoff.vlmc())
...	additional arguments for the cutoff function.

Value

a cut off value

See Also

cutoff()

Examples

pc <- powerconsumption[powerconsumption$week == 5, ]
dts <- cut(pc$active_power, breaks = c(0, quantile(pc$active_power, probs = c(0.25, 0.5, 0.75, 1))))
model <- vlmc(dts)
model_ctxs <- contexts(model)
cutoff(model_ctxs[[1]])
cutoff(model_ctxs[[2]], scale = "native", raw = TRUE)

mixvlmc documentation built on June 8, 2025, 12:35 p.m.