update.FDboost: Function to update FDboost objects

In FDboost: Boosting Functional Regression Models

Function to update FDboost objects

Description

Function to update FDboost objects

Usage

## S3 method for class 'FDboost'
update(
  object,
  weights = NULL,
  oobweights = NULL,
  risk = NULL,
  trace = NULL,
  ...,
  evaluate = TRUE
)

Arguments

object	fitted FDboost-object
weights, oobweights, risk, trace	see ?FDboost
...	Additional arguments to the call, or arguments with changed values.
evaluate	If true evaluate the new call else return the call.

Value

Returns the call of (evaluate = FALSE) or the updated (evaluate = TRUE) FDboost model

Author(s)

David Ruegamer

Examples

######## Example from \code{?FDboost}
data("viscosity", package = "FDboost") 
## set time-interval that should be modeled
interval <- "101"

## model time until "interval" and take log() of viscosity
end <- which(viscosity$timeAll == as.numeric(interval))
viscosity$vis <- log(viscosity$visAll[,1:end])
viscosity$time <- viscosity$timeAll[1:end]
# with(viscosity, funplot(time, vis, pch = 16, cex = 0.2))

mod1 <- FDboost(vis ~ 1 + bolsc(T_C, df = 2) + bolsc(T_A, df = 2),
               timeformula = ~ bbs(time, df = 4),
               numInt = "equal", family = QuantReg(),
               offset = NULL, offset_control = o_control(k_min = 9),
               data = viscosity, control=boost_control(mstop = 10, nu = 0.4))
               
# update nu
mod2 <- update(mod1, control=boost_control(nu = 1)) # mstop will stay the same
# update mstop
mod3 <- update(mod2, control=boost_control(mstop = 100)) # nu=1 does not get changed
mod4 <- update(mod1, formula = vis ~ 1 + bolsc(T_C, df = 2)) # drop one term

FDboost documentation built on Aug. 12, 2023, 5:13 p.m.