lnormprior: lnormprior - create a lognormal prior.

In ToxicR: Analyzing Toxicology Dose-Response Data

lnormprior - create a lognormal prior.

Description

Specify a log-normal prior for a ToxicR Bayesian model fit.

Usage

lnormprior(mean = 0, sd = 1, lb = -100, ub = 100)

Arguments

mean	log-mean of the prior distribution.
sd	log-sd of the prior distribution.
lb	lower bound on the distribution. Necessary for the optimization algorithms, To make sure it is a fully normal prior, make lb small relative to the mean/sd.
ub	Upper bound on the distribution. Necessary for the optimization algorithms, To make sure it is a fully normal prior, make ub large relative to the mean/sd.

Value

a normal prior model object This object essentially a vector with the first element as 2 (for log-normal), the second element the mean, the third element the log-variance, the fourth and fifth elements the lower and upper bounds, respectively.

Examples

 # Log-Normal Prior with mean 0,sd-1
 lnormprior(mean = 0, sd = 1, lb = -1e4, ub=1e4)

 # Truncated Log-Normal prior, Truncated below at 1
 lnormprior(mean = 0, sd = 1, lb = 1, ub=1e4)
 

ToxicR documentation built on Dec. 28, 2022, 3:07 a.m.