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      Question

      What is perplexity in language

      models?
      A A measure of model size Correct Answer Incorrect Answer
      B A measure of prediction uncertainty Correct Answer Incorrect Answer
      C A measure of translation accuracy Correct Answer Incorrect Answer
      D A normalization constant Correct Answer Incorrect Answer
      E A measure of precision Correct Answer Incorrect Answer

      Solution

      Lower perplexity indicates a language model predicts the next word with higher certainty.

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