Name the relevant parameters of the model

Usage

parameter_names(model, ...)

# S4 method for class 'exponential'
parameter_names(
  model,
  dynamics = "isotropic",
  covariance = "symmetric",
  parameters_only = TRUE
)

# S4 method for class 'quasi_hyperbolic'
parameter_names(
  model,
  dynamics = "isotropic",
  covariance = "symmetric",
  parameters_only = TRUE
)

# S4 method for class 'double_exponential'
parameter_names(
  model,
  dynamics = "isotropic",
  covariance = "symmetric",
  parameters_only = TRUE
)

Arguments

model: Instance of the model-class.
...: Additional arguments passed on to the methods.
dynamics: Character denoting the structure of the dynamical matrices. Can either be "anisotropic" (completely free), "symmetric" (symmetric around the diagonal), and "isotropic" (diagonal). Note that this influences different parameters for different models, namely \(\Gamma\) for the exponential discounting model, \(N\) and \(K\) for the quasi-hyperbolic discounting model, and \(\Gamma\) and \(N\) for the double-exponential discounting model. Defaults to "isotropic".
covariance: Character denoting the structure of the covariance matrix. Can either be "symmetric" (symmetric around the diagonal) or "isotropic" (diagonal). Defaults to "symmetric".
parameters_only: Logical denoting whether to only name the parameters in de parameter slot of the model (TRUE), or to fill the covariance matrix as well (FALSE). Defaults to TRUE.

Value

Character vector containing the names for the parameters in the model. The order corresponds to the assumptions of get_bounds and fill.

Examples

# Create an empty instance of the exponential discounting model
my_model <- exponential()

# Get the names for the model, once with and once without the covariances 
# included
parameter_names(
  my_model,
  dynamics = "anisotropic",
  covariance = "isotropic",
  parameters_only = FALSE
)
#> [1] "alpha_1"  "beta_11"  "gamma_11" "sigma_11"

parameter_names(
  my_model,
  dynamics = "anisotropic",
  covariance = "isotropic",
  parameters_only = TRUE
)
#> [1] "alpha_1"  "beta_11"  "gamma_11"