output_Shadow_all-class: Class 'output_Shadow_all': a set of adaptive assembly...
In TestDesign: Optimal Test Design Approach to Fixed and Adaptive Test Construction

output_Shadow_all-class

R Documentation

Class 'output_Shadow_all': a set of adaptive assembly solutions

Description

output_Shadow_all is an S4 class for representing a set of adaptive assembly solutions.

Details

notations

ni denotes the number of items in the item_pool object.
ns denotes the number of stimuli.
nj denotes the number of participants.

Slots

call: the function call used for obtaining this object.
output: a length-*nj* list of output_Shadow objects, containing the assembly results for each participant.
final_theta_est: a length-*nj* vector containing final theta estimates for each participant.
final_se_est: a length-*nj* vector standard errors of the final theta estimates for each participant.
exposure_rate: a matrix containing item-level exposure rates of all items in the pool. Also contains stimulus-level exposure rates if the assembly was set-based.
usage_matrix: a *nj* by (*ni* + *ns*) matrix representing whether the item/stimulus was administered to each participant. Stimuli representations are appended to the right side of the matrix.
cumulative_usage_matrix: a *nj* by (*ni* + *ns*) matrix representing the number of times the item/stimulus was administered to each participant over multiple administrations.
true_segment_count: a length-*nj* vector containing the how many examinees are now in their segment based on the true theta. This will tend to increase. This can be reproduced with true theta values alone.
est_segment_count: a length-*nj* vector containing the how many examinees are now in their segment based on the estimated theta. This will tend to increase. This can be reproduced with estimated theta values alone.
eligibility_stats: exposure record for diagnostics.
check_eligibility_stats: detailed segment-wise exposure record for diagnostics. available when config_Shadow@exposure_control$diagnostic_stats is TRUE.
no_fading_eligibility_stats: detailed segment-wise exposure record without fading for diagnostics. available when config_Shadow@exposure_control$diagnostic_stats is TRUE.
freq_infeasible: a table representing the number of times the assembly was initially infeasible.
pool: the item_pool used in the assembly.
config: the config_Shadow used in the assembly.
constraints: the constraints used in the assembly.
true_theta: the true_theta argument used in the assembly.
data: the data argument used in the assembly.
prior: the prior argument used in the assembly.
prior_par: the prior_par argument used in the assembly.
adaptivity: a list of adaptivity indices.
simulation_constants: a list containing simulation constants parsed from input.