arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2102.02080cs.CL
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基于序列标记的自顶向下语篇分析

Top-down Discourse Parsing via Sequence Labelling

School of Computing and Information Systems(计算与信息系统学院);The University of Melbourne(墨尔本大学)

Fajri Koto, Jey Han Lau, Timothy Baldwin

摘要:

我们引入了一种自上而下的话语分析方法,这种方法在概念上比它的前辈更简单(Kobayashi等人,2020; Zhang等人,2020年)。通过框架的任务作为一个序列标签的问题,其目标是迭代分割成单独的话语单位的文件,我们能够消除解码器,并减少分裂点的搜索空间。我们探讨了传统的循环模型和现代的预训练的Transformer模型的任务,并引入了一种新的自顶向下的解析动态预言。基于Full度量,我们提出的LSTM模型为XML解析提供了一种新的最先进的技术。

英文摘要:

We introduce a top-down approach to discourse parsing that is conceptually simpler than its predecessors (Kobayashi et al., 2020; Zhang et al., 2020). By framing the task as a sequence labelling problem where the goal is to iteratively segment a document into individual discourse units, we are able to eliminate the decoder and reduce the search space for splitting points. We explore both traditional recurrent models and modern pre-trained transformer models for the task, and additionally introduce a novel dynamic oracle for top-down parsing. Based on the Full metric, our proposed LSTM model sets a new state-of-the-art for RST parsing.

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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