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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...
Nowadays, detecting the disaster phenomena and predicting the final stage become very important in the risk analysis view-point. The statistical methods provide accurate estimates of parameters when the data are completely given. However, when the data are incomplete, the accuracy of the estimates becomes poor. Therefore, statistical methods are weak in predicting the future trends. The SIR methods,...
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