Annotation of Chinese Predicate Heads and Relevant Elements

• URL: http://arxiv.org/abs/2103.12280v1
• Date: Tue, 23 Mar 2021 03:11:59 GMT
• Title: Annotation of Chinese Predicate Heads and Relevant Elements
• Authors: Yanping Chen and Yongbin Qin and Ruizhang Huang and Qinghua Zheng and Ping Chen
• Abstract summary: A predicate head is a verbal expression that plays a role as the structural center of a sentence. This paper develops an annotation guideline for Chinese predicate heads and their relevant syntactic elements.
• Score: 20.427035216455366
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: A predicate head is a verbal expression that plays a role as the structural center of a sentence. Identifying predicate heads is critical to understanding a sentence. It plays the leading role in organizing the relevant syntactic elements in a sentence, including subject elements, adverbial elements, etc. For some languages, such as English, word morphologies are valuable for identifying predicate heads. However, Chinese offers no morphological information to indicate words` grammatical roles. A Chinese sentence often contains several verbal expressions; identifying the expression that plays the role of the predicate head is not an easy task. Furthermore, Chinese sentences are inattentive to structure and provide no delimitation between words. Therefore, identifying Chinese predicate heads involves significant challenges. In Chinese information extraction, little work has been performed in predicate head recognition. No generally accepted evaluation dataset supports work in this important area. This paper presents the first attempt to develop an annotation guideline for Chinese predicate heads and their relevant syntactic elements. This annotation guideline emphasizes the role of the predicate as the structural center of a sentence. The design of relevant syntactic element annotation also follows this principle. Many considerations are proposed to achieve this goal, e.g., patterns of predicate heads, a flattened annotation structure, and a simpler syntactic unit type. Based on the proposed annotation guideline, more than 1,500 documents were manually annotated. The corpus will be available online for public access. With this guideline and annotated corpus, our goal is to broadly impact and advance the research in the area of Chinese information extraction and to provide the research community with a critical resource that has been lacking for a long time.

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