What Makes Something Hard(er)? Explaining Question Difficulty in Natural Language
Difficulty is one of the most fundamental properties of a question: it determines whether the question can meaningfully discriminate between models of differing ability. Although a variety of methods can now estimate or predict difficulty automatically, they yield only a single descriptive number, with no account of th...
Peng Cui, Qiao-Yuan Zheng, R. Debelak et al.
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