buildLKTModel: buildLKTModel

Description

Forward and backwards stepwise search for a set of features and components

with tracking of nonlinear parameters.

Usage

buildLKTModel(
  data,
  usefolds = NA,
  allcomponents,
  allfeatures,
  currentcomponents = c(),
  specialcomponents = c(),
  specialfeatures = c(),
  forv,
  bacv,
  preset = NA,
  presetint = T,
  currentfeatures = c(),
  verbose = FALSE,
  currentfixedpars = c(),
  maxitv = 10,
  interc = FALSE,
  forward = TRUE,
  backward = TRUE,
  metric = "BIC",
  removefeat = c(),
  removecomp = c()
)

Value

list of values "tracetable" and "currentfit"

Arguments

data: is a dataset with Anon.Student.Id and CF..ansbin.
usefolds: Numeric Vector | Specifies the folds for model fitting in LKT; the features are still calculated across all folds to compute test fold fit externally
allcomponents: is search space for LKT components
allfeatures: is search space for LKT features
currentcomponents: components to start search from
specialcomponents: add special components (not crossed with features, only paired with special features 1 for 1)
specialfeatures: features for each special component (not crossed during search)
forv: the minimuum amount of improvement needed for the addition of a new term
bacv: the maximuum amount of loss for a term to be removed
preset: One of "static","AFM","PFA","advanced","AFMLLTM","PFALLTM","advancedLLTM"
presetint: should the intercepts be included for preset components
currentfeatures: features to start search from
verbose: passed to LKT
currentfixedpars: used for current features as an option to start
maxitv: passed to LKT
interc: passed to LKT
forward: TRUE or FALSE
backward: TRUE or FALSE
metric: One of "BIC","AUC","AIC", and "RMSE"
removefeat: Character Vector | Excludes specified features from the test list.
removecomp: Character Vector | Excludes specified components from the test list.