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arXiv 2109.02575cs.CL
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大海捞针:从合成数据中抽取结构多样的训练集用于成分泛化

Finding needles in a haystack: Sampling Structurally-diverse Training Sets from Synthetic Data for Compositional Generalization

Tel-Aviv University(特拉维夫大学);Allen Institute for Artificial Intelligence(艾伦人工智能研究所)

Inbar Oren, Jonathan Herzig, Jonathan Berant

摘要:

现代语义解析器有两个主要的局限性。首先,训练需要昂贵的话语-程序对集合。第二,语义解析器在测试时无法泛化到在训练期间没有观察到的新组合/结构。最近的研究表明,自动生成的合成话语程序对可以缓解第一个问题,但其潜力的第二个迄今尚未被充分发掘。在这项工作中,我们研究自动生成的合成话语程序对,以提高合成概括语义解析。给定一个小的注释示例训练集和一个“无限”的合成示例池,我们选择一个结构多样的合成示例子集,并使用它们来提高合成泛化。我们评估我们的方法上的schema 2 QA数据集的一个新的分裂,并表明,它导致了显着的改进,在组成的泛化以及温和的改进,在传统的i.i.d设置。此外,结构多样性采样仅用5 K个样本就实现了这些改进,而随机均匀采样时只有1 M个样本-数据效率提高了200倍。

英文摘要:

Modern semantic parsers suffer from two principal limitations. First, training requires expensive collection of utterance-program pairs. Second, semantic parsers fail to generalize at test time to new compositions/structures that have not been observed during training. Recent research has shown that automatic generation of synthetic utterance-program pairs can alleviate the first problem, but its potential for the second has thus far been under-explored. In this work, we investigate automatic generation of synthetic utterance-program pairs for improving compositional generalization in semantic parsing. Given a small training set of annotated examples and an "infinite" pool of synthetic examples, we select a subset of synthetic examples that are structurally-diverse and use them to improve compositional generalization. We evaluate our approach on a new split of the schema2QA dataset, and show that it leads to dramatic improvements in compositional generalization as well as moderate improvements in the traditional i.i.d setup. Moreover, structurally-diverse sampling achieves these improvements with as few as 5K examples, compared to 1M examples when sampling uniformly at random -- a 200x improvement in data efficiency.

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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