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Table 6 Summary of abbreviations

From: Integrating automatic question generation with computerised adaptive test

Item difficulty
ESTItem difficulty estimated from test taker‘s scores
REGltem difficulty estimated using linear regression
ORDItem difficulty using an ordinal value 1 4
AVGItem difficulty using average item difficulties of items in each group
CAT simulations
LIN_ESTSimulation of the linear test, using EST item difficulty
CAT_ESTSimulation of CAT, using EST item difficulty (gold standard)
CAT_REGSimulation of the CAT, using REG item difficulty
CAT_AVGSimulation of the CAT, using AVG item difficulty
CAT_ORDSimulation of CAT, using ORD item difficulty