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arXiv 2004.14579cs.CL
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Logic2Text:从逻辑形式生成高保真自然语言

Logic2Text: High-Fidelity Natural Language Generation from Logical Forms

University of California, Santa Barbara(加利福尼亚大学圣巴巴拉分校);Intel AI(英特尔人工智能)

Zhiyu Chen, Wenhu Chen, Hanwen Zha, Xiyou Zhou, Yunkai Zhang, Sairam Sundaresan, William Yang Wang

摘要:

以前的工作自然语言生成(NLG)从结构化数据主要集中在表面水平的记录序列的描述。然而,对于复杂的结构化数据,例如,对于多行表,NLG系统通常期望从跨记录的逻辑推断描述感兴趣的事实。如果只提供表,现有的模型很难产生可控的和高保真的逻辑生成。在这项工作中,我们制定了逻辑级NLG从逻辑形式生成,以获得可控,高保真,忠实的一代。我们提出了一个新的大规模数据集,\textsc{Logic2Text},10,753描述涉及常见的逻辑类型与底层的逻辑形式配对。其逻辑形式表现为自由模式的多样化图结构,这对模型的语义理解能力提出了很大的挑战。我们在(1)全监督训练和(2)Few-Shot设置上进行了实验,提供了数百个配对的例子;我们比较了几种流行的生成模型并分析了它们的性能。我们希望我们的数据集可以鼓励研究建立一个先进的NLG系统,能够自然,忠实和人性化的生成。数据集和代码可在https://github.com/czyssrs/Logic2Text上获得。

英文摘要:

Previous works on Natural Language Generation (NLG) from structured data have primarily focused on surface-level descriptions of record sequences. However, for complex structured data, e.g., multi-row tables, it is often desirable for an NLG system to describe interesting facts from logical inferences across records. If only provided with the table, it is hard for existing models to produce controllable and high-fidelity logical generations. In this work, we formulate logical level NLG as generation from logical forms in order to obtain controllable, high-fidelity, and faithful generations. We present a new large-scale dataset, \textsc{Logic2Text}, with 10,753 descriptions involving common logic types paired with the underlying logical forms. The logical forms show diversified graph structure of free schema, which poses great challenges on the model's ability to understand the semantics. We experiment on (1) Fully-supervised training with the full datasets, and (2) Few-shot setting, provided with hundreds of paired examples; We compare several popular generation models and analyze their performances. We hope our dataset can encourage research towards building an advanced NLG system capable of natural, faithful, and human-like generation. The dataset and code are available at https://github.com/czyssrs/Logic2Text.

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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