arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.08178cs.CL
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IMoJIE:基于记忆的迭代联合开放式信息抽取

IMoJIE: Iterative Memory-Based Joint Open Information Extraction

Indian Institute of Technology Delhi(印度理工学院德里分校);Indian Institute of Technology Bombay(印度理工学院孟买分校)

Keshav Kolluru, Samarth Aggarwal, Vipul Rathore, Mausam, Soumen Chakrabarti

摘要:

虽然传统的开放式信息抽取系统是基于统计和规则的,但最近神经模型已经被引入该任务。我们的工作建立在CopyAttention,一个序列生成OpenIE模型(Cui et.例如,2018年)。我们的分析表明,CopyAttention产生一个常数的提取每句话,其提取的元组往往表示冗余信息。我们提出IMoJIE,CopyAttention的扩展,它产生下一个提取条件的所有先前提取的元组。这种方法克服了CopyAttention的两个缺点,导致每个句子的不同提取数量可变。我们在从几个非神经系统的提取中引导的训练数据上训练IMoJIE,这些数据已经被自动过滤以减少冗余和噪声。IMoJIE比CopyAttention高出约18个F1点,比基于BERT的强基线高出2个F1点,为该任务建立了一个新的技术水平。

英文摘要:

While traditional systems for Open Information Extraction were statistical and rule-based, recently neural models have been introduced for the task. Our work builds upon CopyAttention, a sequence generation OpenIE model (Cui et. al., 2018). Our analysis reveals that CopyAttention produces a constant number of extractions per sentence, and its extracted tuples often express redundant information. We present IMoJIE, an extension to CopyAttention, which produces the next extraction conditioned on all previously extracted tuples. This approach overcomes both shortcomings of CopyAttention, resulting in a variable number of diverse extractions per sentence. We train IMoJIE on training data bootstrapped from extractions of several non-neural systems, which have been automatically filtered to reduce redundancy and noise. IMoJIE outperforms CopyAttention by about 18 F1 pts, and a BERT-based strong baseline by 2 F1 pts, establishing a new state of the art for the task.

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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