Negation Focus Identification with Contextual Discourse Information

  title={Negation Focus Identification with Contextual Discourse Information},
  author={Bowei Zou and Guodong Zhou and Qiaoming Zhu},
Negative expressions are common in natural language text and play a critical role in information extraction. However, the performances of current systems are far from satisfaction, largely due to its focus on intrasentence information and its failure to consider inter-sentence information. In this paper, we propose a graph model to enrich intrasentence features with inter-sentence features from both lexical and topic perspectives. Evaluation on the *SEM 2012 shared task corpus indicates the… CONTINUE READING


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