Propositional Term Extraction over Short Text using Word Cohesiveness and Conditional Random Fields with Multi-Level Features

Ru Yng Chang, Chung Hsien Wu

研究成果: Paper同行評審

摘要

Propositional terms in a research abstract (RA) generally convey the most important information for readers to quickly glean the contribution of a research article. This paper considers propositional term extraction from RAs as a sequence labeling task using the IOB (Inside, Outside, Beginning) encoding scheme. In this study, conditional random fields (CRFs) are used to initially detect the propositional terms, and the combined association measure (CAM) is applied to further adjust the term boundaries. This method can extract beyond simply NP-based propositional terms by combining multi-level features and inner lexical cohesion. Experimental results show that CRFs can significantly increase the recall rate of imperfect boundary term extraction and the CAM can further effectively improve the term boundaries.

原文English
出版狀態Published - 2008
事件20th Conference on Computational Linguistics and Speech Processing, ROCLING 2008 - Taipei, Taiwan
持續時間: 2008 9月 42008 9月 5

Other

Other20th Conference on Computational Linguistics and Speech Processing, ROCLING 2008
國家/地區Taiwan
城市Taipei
期間08-09-0408-09-05

All Science Journal Classification (ASJC) codes

  • 語言與語言學
  • 言語和聽力

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