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arXiv 1808.07599cs.CL
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时间关系的结构化解释

Structured Interpretation of Temporal Relations

Brandeis University(布兰迪斯大学)

Yuchen Zhang, Nianwen Xue

摘要:

文档中的事件和时间表达式之间的时间关系通常以非结构化的方式建模,其中单独考虑时间表达式和事件之间的关系。这通常会导致不一致和不完整的注释和计算建模。我们提出了一种新的注释方法,在文档中的事件和时间表达式形成一个依赖树,其中每个依赖关系对应于一个实例的时间回指的先行词是父母和回指是孩子。我们使用这种方法在新闻和叙事两种类型中注释了235个文档的语料库,其中48个文档进行了双重注释。我们报告了一个稳定的和高的双注释子集的注释者之间的协议,验证我们的方法,并执行整个语料库的两种类型之间的定量比较。我们把这个语料库公开。

英文摘要:

Temporal relations between events and time expressions in a document are often modeled in an unstructured manner where relations between individual pairs of time expressions and events are considered in isolation. This often results in inconsistent and incomplete annotation and computational modeling. We propose a novel annotation approach where events and time expressions in a document form a dependency tree in which each dependency relation corresponds to an instance of temporal anaphora where the antecedent is the parent and the anaphor is the child. We annotate a corpus of 235 documents using this approach in the two genres of news and narratives, with 48 documents doubly annotated. We report a stable and high inter-annotator agreement on the doubly annotated subset, validating our approach, and perform a quantitative comparison between the two genres of the entire corpus. We make this corpus publicly available.

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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