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the following manner. We apply the same example-generation strategy to the test documents, then run each example through the learner. We can determine the keyphrases by looking at binary classification decisions or probabilities returned from our learned model. If probabilities are given, a threshold is used to select the keyphrases.Keyphrase extractors are generally evaluated using precision and recall. Precision measures howmany of the proposed keyphrases are actually correct. Recall measures how

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