A Simulation Study to the Dually Adaptive Online
IRT Testing System
Authors
Hideo Hirose and Yoshiko Tokusada
Source
IEEE International Conference on Teaching, Assessment, and Learning
for Engineering 2014 (TALE 2014), 8E_3,
pp.1-6, December 8-10,
2014, Te Papa Tongarewa National Museum of New Zealand, Wellington,
New Zealand
Abstract
The
item response theory (IRT) gives us valuable information about
the difficulties of items as well as the abilities of examinees.
Adaptive testing using the IRT provides the most appropriate items
to examinees automatically. However, the item parameters remain
the same even if the features of the examinees and the number of
examinees change. We propose to use the dually adaptive online
IRT testing system, where gdually adaptiveh means that one is targeted
to the adequate item selection and the other is to the adjustment
of the difficulty values for items. The key idea for this is to
use the matrix completion method to the incomplete matrix. By using
the simulation study, we found that the proposed method works well.