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arXiv 2110.04413cs.CVcs.AI
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基于transformer的表单字段抽取器对表单攻击的鲁棒性评估

Robustness Evaluation of Transformer-based Form Field Extractors via Form Attacks

Salesforce Research(Salesforce研究中心)

Le Xue, Mingfei Gao, Zeyuan Chen, Caiming Xiong, Ran Xu

摘要:

我们提出了一个新的框架来评估基于变换的形式字段提取方法通过形式攻击的鲁棒性。我们介绍了14种新的形式变换,以评估最先进的字段提取器对OCR级别和表单级别的形式攻击的脆弱性,包括OCR位置/顺序重排,表单背景操作和表单字段值增强。我们使用真实的发票和收据进行稳健性评估,并进行全面的研究分析。实验结果表明,被评估的模型是非常容易受到形式扰动,如字段值的变化(约15%的F1分数下降),输入文本顺序的混乱(约15%的F1分数下降)和字段值的相邻词的中断(约10%的F1分数下降)。在分析的指导下,我们提出了建议,以改善现场提取器的设计和数据汇集的过程。

英文摘要:

We propose a novel framework to evaluate the robustness of transformer-based form field extraction methods via form attacks. We introduce 14 novel form transformations to evaluate the vulnerability of the state-of-the-art field extractors against form attacks from both OCR level and form level, including OCR location/order rearrangement, form background manipulation and form field-value augmentation. We conduct robustness evaluation using real invoices and receipts, and perform comprehensive research analysis. Experimental results suggest that the evaluated models are very susceptible to form perturbations such as the variation of field-values (~15% drop in F1 score), the disarrangement of input text order(~15% drop in F1 score) and the disruption of the neighboring words of field-values(~10% drop in F1 score). Guided by the analysis, we make recommendations to improve the design of field extractors and the process of data collection.

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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