Package index • AccumulatR

Package Overview

Documentation Overview

AccumulatR AccumulatR-package: AccumulatR: Simulate and fit evidence-accumulation models

Model Specification

Define accumulators, outcomes, components, triggers, and finalize a race model.

race_spec(): Start a race-model specification
add_accumulator(): Add an accumulator to a model
add_pool(): Pool several accumulators under a shared label
add_outcome(): Define an observed response
add_component(): Define a mixture component
set_parameters(): Control parameter grouping and names
add_trigger(): Add a shared absence trigger
set_mixture(): Control how mixture components are combined
finalize_model(): Finalize a model for simulation and fitting
complexity_metrics(): Inspect the size of a compiled likelihood plan

Outcome Expressions and Timing

Compose outcome rules and onset dependencies.

build_outcome_expr(): Build a response rule from a quoted expression
all_of(): Define a response that requires several processes to finish
first_of(): Define a response that occurs when the first listed process finishes
none_of(): Define the absence of an event
inhibit(): Define a response that is blocked by another process
after(): Start one accumulator after another process finishes

Model Preparation

Inspect model parameters and prepare trial-level parameter matrices.

prepare_data(): Prepare behavioral data for likelihood evaluation
par_names(): List the parameter names used by a model
build_param_matrix(): Create trial-level parameter values

Likelihood and Simulation

Build native likelihood contexts, simulate observations, and evaluate probabilities.

make_context(): Build a compiled likelihood context from a model
log_likelihood(): Evaluate log-likelihoods of behavioral data
simulate(): Simulate behavioral data from a model
response_probabilities(): Evaluate marginal response probabilities

Visualization

Plot and inspect model structure.

processing_tree(): Draw a processing tree for the responses in a model
plot_accumulators(): Plot accumulators and their timing relations