• Title, Summary, Keyword: 평면적 어휘 자질

Search Result 1, Processing Time 0.021 seconds

Relation Extraction based on Extended Composite Kernel using Flat Lexical Features (평면적 어휘 자질들을 활용한 확장 혼합 커널 기반 관계 추출)

  • Chai, Sung-Pil;Jeong, Chang-Hoo;Chai, Yun-Soo;Myaeng, Sung-Hyon
    • Journal of KIISE:Software and Applications
    • /
    • v.36 no.8
    • /
    • pp.642-652
    • /
    • 2009
  • In order to improve the performance of the existing relation extraction approaches, we propose a method for combining two pivotal concepts which play an important role in classifying semantic relationships between entities in text. Having built a composite kernel-based relation extraction system, which incorporates both entity features and syntactic structured information of relation instances, we define nine classes of lexical features and synthetically apply them to the system. Evaluation on the ACE RDC corpus shows that our approach boosts the effectiveness of the existing composite kernels in relation extraction. It also confirms that by integrating the three important features (entity features, syntactic structures and contextual lexical features), we can improve the performance of a relation extraction process.