arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1909.00596cs.CLcs.LG
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通过学习排序解决问题--通过回答问题解决学习排序

Answering questions by learning to rank -- Learning to rank by answering questions

University Politehnica of Bucharest(布加勒斯特理工大学)

George-Sebastian Pîrtoacă, Traian Rebedea, Stefan Ruseti

摘要:

在没有明确提供支持文档的情况下,选择题的处理仍然是自然语言处理的核心问题。这篇文章的贡献是双重的。首先,它描述了一种方法,可以用来从维基百科或类似的自然语言语料库中提取的文档进行语义排名。其次,我们提出了一个模型,采用语义排名,在两个最流行的排行榜回答多项选择题:ARC容易和挑战。为了实现这一目标,我们引入了一个基于自我注意的神经网络,它潜在地学习根据与给定问题相关的重要性对文档进行排名,同时优化预测正确答案的目标。这些文件被认为是基本问题的相关背景。我们已经发布了排名的文档,以便它们可以被现成地用于改进下游决策模型。

英文摘要:

Answering multiple-choice questions in a setting in which no supporting documents are explicitly provided continues to stand as a core problem in natural language processing. The contribution of this article is two-fold. First, it describes a method which can be used to semantically rank documents extracted from Wikipedia or similar natural language corpora. Second, we propose a model employing the semantic ranking that holds the first place in two of the most popular leaderboards for answering multiple-choice questions: ARC Easy and Challenge. To achieve this, we introduce a self-attention based neural network that latently learns to rank documents by their importance related to a given question, whilst optimizing the objective of predicting the correct answer. These documents are considered relevant contexts for the underlying question. We have published the ranked documents so that they can be used off-the-shelf to improve downstream decision models.

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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