The optical function can handle the calibration of a substantial number of items (100-200) by grouping them into blocks of 3-5 items each.
The efficiency function can now provide the efficiency of the optimal design compared to a random design for each block.
Graphs for the optimal design in each block can now be created using the drawdesign function.
Convergence plots can be created for each block for monitoring the
convergence of optimal item calibration algorithm using the convergenceplot function.
A new function, drawdesign_allitems, has been created to enable users to display the optimal calibration design for all items in one graph.
A new function, calitems, has been introduced to help users determine the calibration items to allocate to an examinee based on their given ability.