estimateInterimTheta function

(Internal) Estimate interim theta

estimateInterimTheta is an internal function for estimating interim theta.

estimateInterimTheta(
  o,
  j,
  position,
  augmented_current_theta,
  augmented_item_pool,
  model_code,
  augmented_item_index,
  augmented_item_resp,
  include_items_for_estimation,
  item_parameter_sample,
  config,
  simulation_constants,
  bayesian_constants
)

Arguments

• o: an output_Shadow object.

• j: the numeric index of the examinee.

• position: the item position, ranging from 1 to test length.

• augmented_current_theta: current theta estimate, based on any extra items supplied to the simulation.

• augmented_item_pool: the item_pool object, also including any extra items supplied to the simulation.

• model_code: machine-sanitized item model codes for passing onto C++ functions.

• augmented_item_index: item indices of items administered to this examinee, also including any extra items supplied to the simulation.

• augmented_item_resp: responses for items administered to this examinee, also including any extra items supplied to the simulation.

• include_items_for_estimation: an examinee-wise list containing:

  • administered_item_pool items to include in theta estimation as item_pool object.
  • administered_item_resp item responses to include in theta estimation.

• item_parameter_sample: a list containing numerical samples of item parameters that reflect item parameter estimation uncertainty. The output of iparPosteriorSample goes here.

• config: a config_Shadow object. Use createShadowTestConfig for this.

• simulation_constants: a named list containing simulation constants.

• bayesian_constants: a named list containing Bayesian constants.

Returns

estimateInterimTheta returns an updated output_Shadow object.