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The system allows to select one of three predefined item selection strategies based in IRT.
Twenty items belonging to 18 questions were selected based on the criteria for item selection described in the methods section.
The Next Item Selection Engine implements the adaptiveness of the tests via selecting an item from the item pool.
The adaptive item selection procedure of a CAT begins with the administration of pre-selected or randomly chosen start items.
In a multidimensional CAT, the item selection procedure is more complicated as items from different dimensions have to be selected.
R2: Flexibility in item selection algorithm the platform has to be able to use different item selection strategies for the identification of first item and for succeeding items.
They mainly differ in the flexibility they offer for testing strategies and item selection.
It can be used with a variety of item selection algorithms and scoring procedures.
Afterwards, we revisit the current implementation of the architecture, which relies on catR for item selection.
(ZIP 314 kb) Additional file 2: Additional Information on the Item Selection Process.
The same steps were adopted in the calibration and anchor item selection of the TRC-n-4.
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