arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.13399cs.CLcs.AIcs.LG
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语篇表征结构分析的第一个共享任务

The First Shared Task on Discourse Representation Structure Parsing

University of Groningen(格罗宁根大学)

Lasha Abzianidze, Rik van Noord, Hessel Haagsma, Johan Bos

摘要:

本文介绍了IWCS 2019关于语义解析的共享任务,其目标是为英语句子生成话语表示结构(DRS)。DRS起源于话语表征理论,代表了范围意义表征,捕获了否定,情态,量化和预设触发器的语义。此外,在DRS的概念和事件参与者描述与WordNet的同义词和主题角色从VerbNet。为了测量两个DRS之间的相似性,它们以子句形式表示,即作为元组的集合。参与者系统被期望以这种子句形式产生DRS。考虑到丰富的词汇信息,明确的范围标记,大量的共享变量之间的条款,并高度约束格式的有效DRS,所有这些使得DRS解析一个具有挑战性的NLP任务。共享任务的结果显示了对现有最先进解析器的改进。

英文摘要:

The paper presents the IWCS 2019 shared task on semantic parsing where the goal is to produce Discourse Representation Structures (DRSs) for English sentences. DRSs originate from Discourse Representation Theory and represent scoped meaning representations that capture the semantics of negation, modals, quantification, and presupposition triggers. Additionally, concepts and event-participants in DRSs are described with WordNet synsets and the thematic roles from VerbNet. To measure similarity between two DRSs, they are represented in a clausal form, i.e. as a set of tuples. Participant systems were expected to produce DRSs in this clausal form. Taking into account the rich lexical information, explicit scope marking, a high number of shared variables among clauses, and highly-constrained format of valid DRSs, all these makes the DRS parsing a challenging NLP task. The results of the shared task displayed improvements over the existing state-of-the-art parser.

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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