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arXiv 2403.20196cs.CL
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不同语篇标注框架语篇关系的自动对齐

Automatic Alignment of Discourse Relations of Different Discourse Annotation Frameworks

School of Computer Science, University of St Andrews(圣安德鲁斯大学计算机学院)

Yingxue Fu

AI总结:

针对不同语篇标注框架关系清单难以关联的问题,本文扩展标签锚定对比学习以获得标签嵌入,并据此自动映射跨框架语篇关系,在 RST-DT 与 PDTB 3.0 上验证。

摘要:

现有语篇语料库基于不同框架进行标注,这些框架在论元与关系的定义以及结构约束方面表现出显著差异。尽管存在表层差异,这些框架对语篇关系仍有基本共识。这些框架之间的关系一直是一个开放性研究问题,尤其是不同框架所采用关系清单之间的关联。更好地理解这一问题,有助于整合语篇理论,并使在不同框架下标注的语篇语料库能够实现互操作。然而,探索语篇关系清单之间关联的研究受到语篇切分标准不同的阻碍,通常还需要专家知识和人工检查。已有一些半自动方法被提出,但它们依赖于以多种框架并行标注的语料库。本文提出一种全自动方法来应对这些挑战。具体而言,我们扩展了 Zhang 等人(2022b)提出的标签锚定对比学习方法,以在分类任务中学习标签嵌入。随后,这些嵌入被用于映射来自不同框架的语篇关系。我们展示了在 RST-DT(Carlson 等人,2001)和 PDTB 3.0(Prasad 等人,2018)上的实验结果。

英文摘要:

Existing discourse corpora are annotated based on different frameworks, which show significant dissimilarities in definitions of arguments and relations and structural constraints. Despite surface differences, these frameworks share basic understandings of discourse relations. The relationship between these frameworks has been an open research question, especially the correlation between relation inventories utilized in different frameworks. Better understanding of this question is helpful for integrating discourse theories and enabling interoperability of discourse corpora annotated under different frameworks. However, studies that explore correlations between discourse relation inventories are hindered by different criteria of discourse segmentation, and expert knowledge and manual examination are typically needed. Some semi-automatic methods have been proposed, but they rely on corpora annotated in multiple frameworks in parallel. In this paper, we introduce a fully automatic approach to address the challenges. Specifically, we extend the label-anchored contrastive learning method introduced by Zhang et al. (2022b) to learn label embeddings during a classification task. These embeddings are then utilized to map discourse relations from different frameworks. We show experimental results on RST-DT (Carlson et al., 2001) and PDTB 3.0 (Prasad et al., 2018).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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