TestDesign: getSolutionAttributes – R documentation

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TestDesign

getSolutionAttributes

Retrieve constraints-related attributes from solution

Description

getSolutionAttributes is a helper function to retrieve constraints-related attributes from a solution.

Usage

getSolutionAttributes(constraints, item_idx, all_values = FALSE)

Arguments

`constraints`	a `constraints` object.
`item_idx`	item indices from a solution.
`all_values`	if `TRUE`, return all values as-is without taking the mean when there are multiple values. If `FALSE`, return the mean when there are multiple values. This has an effect when there is a constraint on items per stimulus, where there are multiple values of number of items per stimulus. In this case, if `TRUE`, the number of items for every stimuli are returned as-is. If `FALSE`, the average number of items across stimuli is returned. (default = `FALSE`)

Value

If all_values == FALSE, getSolutionAttributes returns a data.frame containing constraints data and their associated attributes.
If all_values == TRUE, getSolutionAttributes returns a list containing attributes associated to each constraint.

Examples

item_idx <-
  c( 29,  33,  26,  36,  34,
    295, 289, 296, 291, 126,
    133, 124, 134, 129,  38,
     47,  39,  41,  46,  45,
    167, 166, 170, 168, 113,
    116, 119, 117, 118, 114)

getSolutionAttributes(constraints_reading, item_idx, FALSE)
getSolutionAttributes(constraints_reading, item_idx, TRUE)

TestDesign

Optimal Test Design Approach to Fixed and Adaptive Test Construction

v1.2.2

GPL (>= 2)

Authors

Seung W. Choi [aut, cre] (<https://orcid.org/0000-0003-4777-5420>), Sangdon Lim [aut] (<https://orcid.org/0000-0002-2988-014X>)

Initial release

2021-01-26

getSolutionAttributes

Description

Usage

Arguments

Value

Examples

TestDesign

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