RprobitB_data: Create object of class 'RprobitB_data'
In RprobitB: Bayesian Probit Choice Modeling

RprobitB_data

R Documentation

Create object of class `RprobitB_data`

Description

This function constructs an object of class RprobitB_data.

Usage

RprobitB_data(
  data,
  choice_data,
  N,
  T,
  J,
  P_f,
  P_r,
  alternatives,
  ordered,
  ranked,
  base,
  form,
  re,
  ASC,
  effects,
  standardize,
  simulated,
  choice_available,
  true_parameter,
  res_var_names
)

Arguments

`data`	A list with the choice data. The list has `N` elements. Each element is a list with two elements, `X` and `y`, which are the covariates and decisions for a decision maker. More precisely, `X` is a list of `T` elements, where each element is a matrix of dimension `J`x(`P_f`+`P_r`) and contains the characteristics for one choice occasion. `y` is a vector of length `T` and contains the labels for the chosen alternatives.
`choice_data`	A `data.frame` of choice data in wide format, i.e. each row represents one choice occasion.
`N`	The number (greater or equal 1) of decision makers.
`T`	The number (greater or equal 1) of choice occasions or a vector of choice occasions of length `N` (i.e. a decision maker specific number). Per default, `T = 1`.
`J`	The number (greater or equal 2) of choice alternatives.
`P_f`	The number of covariates connected to a fixed coefficient (can be 0).
`P_r`	The number of covariates connected to a random coefficient (can be 0).
`alternatives`	A character vector with the names of the choice alternatives. If not specified, the choice set is defined by the observed choices. If `ordered = TRUE`, `alternatives` is assumed to be specified with the alternatives ordered from worst to best.
`ordered`	A boolean, `FALSE` per default. If `TRUE`, the choice set `alternatives` is assumed to be ordered from worst to best.
`ranked`	TBA
`base`	A character, the name of the base alternative for covariates that are not alternative specific (i.e. type 2 covariates and ASCs). Ignored and set to `NULL` if the model has no alternative specific covariates (e.g. in the ordered probit model). Per default, `base` is the last element of `alternatives`.
`form`	A `formula` object that is used to specify the model equation. The structure is `choice ~ A \| B \| C`, where `choice` is the name of the dependent variable (the choices), `A` are names of alternative and choice situation specific covariates with a coefficient that is constant across alternatives, `B` are names of choice situation specific covariates with alternative specific coefficients, and `C` are names of alternative and choice situation specific covariates with alternative specific coefficients. Multiple covariates (of one type) are separated by a `+` sign. By default, alternative specific constants (ASCs) are added to the model. They can be removed by adding `+0` in the second spot. In the ordered probit model (`ordered = TRUE`), the `formula` object has the simple structure `choice ~ A`. ASCs are not estimated.
`re`	A character (vector) of covariates of `form` with random effects. If `re = NULL` (the default), there are no random effects. To have random effects for the ASCs, include `"ASC"` in `re`.
`ASC`	A boolean, determining whether the model has ASCs.
`effects`	A data frame with the effect names and booleans indicating whether they are connected to random effects.
`standardize`	A character vector of names of covariates that get standardized. Covariates of type 1 or 3 have to be addressed by `<covariate>_<alternative>`. If `standardize = "all"`, all covariates get standardized.
`simulated`	A boolean, if `TRUE` then `data` is simulated, otherwise `data` is empirical.
`choice_available`	A boolean, if `TRUE` then `data` contains observed choices.
`true_parameter`	An object of class `RprobitB_parameters`.
`res_var_names`	A names list of reserved variable names in `choice_data`.