汉语篇章依存结构的标注难点与处理

篇章依存结构一般表示为最小篇章单位(小句)间的支配与被支配关系,相比修辞结构等,其可以有效刻画最小篇章单位间的直接关系及其向心性。篇章依存结构的理论内涵及具体实践有待深入。该文结合汉语篇章依存结构语料库的标注实践,重点分析标注难点问题并给出处理方案,包括小句切分、小句关联、依存中心等重要分析任务。事实上,这些难点不仅是人工标注的难点,也是自动标注的难点,其处理不仅有利于指导构建高质量语料库,也有利于指导进一步的自动标注研究。

Difficulties in Annotating the Discourse Dependency Structure of Chinese Texts and the Solution

The discourse dependency structure is generally expressed as the dominant relationship between the minimum discourse units (clauses), which can effectively depict the direct relationship between the minimum discourse units and its concentric nature compared with the rhetorical structure. Based on the annotating practice of Chinese discourse dependency structure corpus, this paper is focused on the analysis of the annotation difficulties and the possible solutions, including clause segmentation, clause relevance, dependency head and other important analysis tasks. In fact, these difficulties also challenge the automatic annotation. The solutions benefit both the construction of high-quality corpus and the research on parsing.