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Precision and recall

Precision and recall. Please return all cases satisfying condition C. “Return all monomorphemic words” (words made up of only one morpheme). Precision = A / (A+B). Recall = A / (A+C). “return all breaks between morphemes”. Total number of test locations:

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Precision and recall

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  1. Precision and recall

  2. Please return all cases satisfying condition C

  3. “Return all monomorphemic words” (words made up of only one morpheme) Precision = A / (A+B) Recall = A / (A+C)

  4. “return all breaks between morphemes” • Total number of test locations: • Precision: Number of locations correctly predicted /Total number of locations predicted. • Recall?

  5. “Give me a list of all of the morphemes in this corpus.” • Precision: Number of correct morphemes returned /Number of morphemes returned • Recall: Number of correct morphemes returned /Number of morphemes really in corpus (“gold standard”)

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