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arXiv 2102.03556cs.CL
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基于LM文本增强的神经元数据到文本生成

Neural Data-to-Text Generation with LM-based Text Augmentation

Saarland University(萨尔大学);Amazon Alexa AI(亚马逊Alexa人工智能);Tencent Inc(腾讯公司)

Ernie Chang, Xiaoyu Shen, Dawei Zhu, Vera Demberg, Hui Su

摘要:

对于许多新的数据到文本生成的应用领域,训练神经模型的主要障碍包括缺乏训练数据。虽然数据端通常有大量的实例可用,但通常只有很少的文本样本可用。为了解决这个问题,我们在这里提出了一种新的Few-Shot方法。我们的方法通过以下方式自动增加可用于训练的数据:(i)基于将特定值替换为来自同一类别的替代值来生成新的文本样本,(ii)基于GPT-2生成新的文本样本,以及(iii)提出一种将新的文本样本与数据样本配对的自动方法。由于文本增强可能会将噪声引入到训练数据中,因此我们使用循环一致性作为目标,以确保给定的数据样本在被公式化为文本之后可以正确地重建(并且可以从数据重建文本样本)。在E2 E和WebNLG的基准测试中,我们证明了这种弱监督训练范式能够优于具有不到10%注释的完全监督seq 2seq模型。通过利用所有带注释的数据,我们的模型可以将标准seq 2seq模型的性能提高5个BLEU点以上,在两个数据集上建立新的最新技术水平。

英文摘要:

For many new application domains for data-to-text generation, the main obstacle in training neural models consists of a lack of training data. While usually large numbers of instances are available on the data side, often only very few text samples are available. To address this problem, we here propose a novel few-shot approach for this setting. Our approach automatically augments the data available for training by (i) generating new text samples based on replacing specific values by alternative ones from the same category, (ii) generating new text samples based on GPT-2, and (iii) proposing an automatic method for pairing the new text samples with data samples. As the text augmentation can introduce noise to the training data, we use cycle consistency as an objective, in order to make sure that a given data sample can be correctly reconstructed after having been formulated as text (and that text samples can be reconstructed from data). On both the E2E and WebNLG benchmarks, we show that this weakly supervised training paradigm is able to outperform fully supervised seq2seq models with less than 10% annotations. By utilizing all annotated data, our model can boost the performance of a standard seq2seq model by over 5 BLEU points, establishing a new state-of-the-art on both datasets.

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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