arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1908.07898cs.CL
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我们是在为任务建模还是在为注释器建模?自然语言理解数据集中的注释者偏差研究

Are We Modeling the Task or the Annotator? An Investigation of Annotator Bias in Natural Language Understanding Datasets

Tel Aviv University(特拉维夫大学);Allen Institute for AI(艾伦人工智能研究所);Bar-Ilan University(巴伊兰大学)

Mor Geva, Yoav Goldberg, Jonathan Berant

摘要:

近年来,众包已经成为创建自然语言理解数据集的流行范例。一种常见的众包做法是招募少量高质量的工作人员,让他们大量生成示例。只有少数几个工人生成大多数示例会引起对数据多样性的担忧,特别是当工人自由生成句子时。在本文中,我们进行了一系列实验,显示这些问题在最近的三个NLP数据集中是显而易见的。我们表明,当使用注释者标识符作为特征进行训练时,模型的性能得到了提高,并且模型能够识别出最有效的注释者。此外,我们发现,通常模型不能很好地推广到对训练集没有贡献的注释器的示例。我们的研究结果表明,注释器的偏见应在数据集创建过程中进行监控,测试集注释器应与训练集注释器不相交。

英文摘要:

Crowdsourcing has been the prevalent paradigm for creating natural language understanding datasets in recent years. A common crowdsourcing practice is to recruit a small number of high-quality workers, and have them massively generate examples. Having only a few workers generate the majority of examples raises concerns about data diversity, especially when workers freely generate sentences. In this paper, we perform a series of experiments showing these concerns are evident in three recent NLP datasets. We show that model performance improves when training with annotator identifiers as features, and that models are able to recognize the most productive annotators. Moreover, we show that often models do not generalize well to examples from annotators that did not contribute to the training set. Our findings suggest that annotator bias should be monitored during dataset creation, and that test set annotators should be disjoint from training set annotators.

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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