beta_parms_from_quantiles: Pick parameters in the Beta distribution to match the...
In zhenkewu/baker: "Nested Partially Latent Class Models"

beta_parms_from_quantiles

R Documentation

Pick parameters in the Beta distribution to match the specified range

Description

beta_parms_from_quantiles produces prior Beta parameters for the true positive rates (TPR)

Usage

beta_parms_from_quantiles(
  q,
  p = c(0.025, 0.975),
  precision = 0.001,
  derivative.epsilon = 0.001,
  start.with.normal.approx = TRUE,
  start = c(1, 1),
  plot = FALSE
)

Arguments

`q`	A vector of lower and upper bounds, in which Beta distribution will have quantiles specified by `p`. For example, `q=c(0.5,0.99)`
`p`	The lower and upper quantiles of the range one wants to specify.
`precision`	Approximation precisions.
`derivative.epsilon`	Precision of calculating derivative.
`start.with.normal.approx`	Default is `TRUE`, for normal approximation.
`start`	Starting values of beta parameters.
`plot`	Default is `FALSE` to suppress plotting of the beta density, otherwise, set to `TRUE`.

Value

A list containing the selected Beta parameters a, and b. Other elements of the list include some details about the computations involved in finding a and b.