updateUsageMatrix function

(Internal) Update item usage matrix

updateUsageMatrix is an internal function for updating an item usage matrix. An item usage matrix is a (nj, nv) matrix with TRUE or FALSE values. The rows represent examinees, and the columns represent decision variables.

updateUsageMatrix(usage_matrix, j, x, simulation_constants)

Arguments

• usage_matrix: a (nj, nv) matrix containing item usage.
• j: the examinee index.
• x: an output_Shadow object containing the examinee's simulation data.
• simulation_constants: a named list containing simulation constants.

Returns

updateUsageMatrix returns an updated item usage matrix.