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Ruihong huang and ellen riloff

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  • Most event extraction systems are trained with supervised learning and rely on a collection of annotated documents. Due to the domain-specificity of this task, event extraction systems must be retrained with new annotated data for each domain. In this paper, we propose a bootstrapping solution for event role filler extraction that requires minimal human supervision. We aim to rapidly train a state-of-the-art event extraction system using a small set of “seed nouns” for each event role, a collection of relevant (in-domain) and irrelevant (outof-domain) texts, and a semantic dictionary. ...

    pdf10p bunthai_1 06-05-2013 30 2   Download

  • This research explores the idea of inducing domain-specific semantic class taggers using only a domain-specific text collection and seed words. The learning process begins by inducing a classifier that only has access to contextual features, forcing it to generalize beyond the seeds. The contextual classifier then labels new instances, to expand and diversify the training set. Next, a cross-category bootstrapping process simultaneously trains a suite of classifiers for multiple semantic classes. ...

    pdf11p hongdo_1 12-04-2013 34 1   Download

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