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rethinking (version 2.13)

precis: Precis of model fit

Description

Displays concise parameter estimate information for an existing model fit.

Usage

precis( model , depth=1 , pars , ci=TRUE , prob=0.89 , 
    corr=FALSE , digits=2 , warn=TRUE )

Arguments

model

Fit model object

depth

If 1, suppresses vectors and matrices of parameters. If 2, displays all parameters

pars

Optional character vector of parameter names to display

ci

Show quadratic estimate confidence intervals

prob

Width of posterior intervals

corr

If TRUE, show correlations among parameters in output

digits

Number of decimal places to display in output

warn

If TRUE, warns about various things

Value

A data frame with a row for each parameter. The n_eff and Rhat columns are calculated by rstan. Rhat4 indicates Rhat as defined in Gelman et al 2013 "Bayesian Data Analysis". This is different from the classic 1992 Gelman and Rubin definition, as Rhat4 uses more information from multiple chains.

Details

Creates a table of estimates and standard errors, with optional confidence intervals and parameter correlations. Posterior intervals are quadratic estimates, derived from standard deviations, unless the model uses samples from the posterior distribution, in which case HPDI is used instead.

Can also provide expected value, standard deviation, and HPDI columns for a data frame.