Package index • DPMirt

Package

DPMirt DPMirt-package: DPMirt: Bayesian Semiparametric IRT Models Using DPM Priors

All-in-one model fitting function

Modular pipeline for fine-grained control

dpmirt_spec() print(<dpmirt_spec>): Create a DPMirt model specification
dpmirt_compile() print(<dpmirt_compiled>): Compile a DPMirt model specification
dpmirt_sample() print(<dpmirt_samples>): Run MCMC sampling on a compiled DPMirt model
dpmirt_rescale(): Rescale posterior samples for identification
dpmirt_resume(): Resume MCMC sampling from a previous run

Triple-goal estimation (PM, CB, GR) and rescaled posterior draw access

dpmirt_estimates() print(<dpmirt_estimates>): Compute posterior estimates using PM, CB, and GR methods
dpmirt_draws(): Extract posterior draws from a DPMirt fit

Diagnostics, comparison, and loss evaluation

dpmirt_diagnostics() print(<dpmirt_diagnostics>): Compute MCMC Diagnostics for a DPMirt Fit
dpmirt_compare(): Compare DPMirt models using information criteria
dpmirt_loss(): Evaluate estimator performance using loss functions

Dirichlet Process Mixture density and prior elicitation

dpmirt_dp_density() print(<dpmirt_dp_density>): Compute posterior density of the DP mixture
dpmirt_alpha_prior(): Elicit a Gamma Hyperprior for the DP Concentration Parameter

Rasch/2PL reliability-targeted simulation and fallback generation

Plotting functions for model results

dpmirt_plot_density(): Plot Posterior Mean Density
dpmirt_plot_items(): Plot Item Parameter Estimates
dpmirt_plot_trace(): Plot Log-Likelihood MCMC Trace
dpmirt_plot_parameter_trace(): Plot Individual Parameter MCMC Traces
dpmirt_plot_caterpillar(): Plot Caterpillar (Forest) Plot
dpmirt_plot_icc(): Plot Item Characteristic Curves
dpmirt_plot_info(): Plot Test Information Function
dpmirt_plot_wright_map(): Plot Person-Item Map (Wright Map)
dpmirt_plot_clusters(): Plot Cluster Count Diagnostics
dpmirt_plot_dp_density(): Plot DP Mixture Density
dpmirt_plot_density_compare(): Plot Posterior Density vs Reference Distribution
dpmirt_plot_pp_check(): Plot Posterior Predictive Check

Print, summary, coef, and plot methods for DPMirt objects

print(<dpmirt_fit>) summary(<dpmirt_fit>) coef(<dpmirt_fit>): Methods for dpmirt_fit Objects
plot(<dpmirt_fit>): Plot a DPMirt fit object
plot(<dpmirt_estimates>): Plot dpmirt_estimates object
plot(<dpmirt_sim>): Plot dpmirt_sim object