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- W1993842991 abstract "We present two techniques to reduce machine learning cost, i.e., cost of manually annotating unlabeled data, for adapting existing CRF-based named entity recognition (NER) systems to new texts or domains. We introduce the tag posterior probability as the tag confidence measure of an individual NE tag determined by the base model. Dubious tags are automatically detected as recognition errors, and regarded as targets of manual correction. Compared to entire sentence posterior probability, tag posterior probability has the advantage of minimizing system cost by focusing on those parts of the sentence that require manual correction. Using the tag confidence measure, the first technique, known as active learning, asks the editor to assign correct NE tags only to those parts that the base model could not assign tags confidently. Active learning reduces the learning cost by 66%, compared to the conventional method. As the second technique, we propose bootstrapping NER, which semi-automatically corrects dubious tags and updates its model." @default.
- W1993842991 created "2016-06-24" @default.
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- W1993842991 date "2009-01-01" @default.
- W1993842991 modified "2023-09-23" @default.
- W1993842991 title "Tag confidence measure for semi-automatically updating named entity recognition" @default.
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- W1993842991 doi "https://doi.org/10.3115/1699705.1699745" @default.
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