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arXiv 2108.03578cs.CLcs.LG
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开放式文本生成中的语言模型评价

Language Model Evaluation in Open-ended Text Generation

The University of Melbourne(墨尔本大学)

An Nguyen

摘要:

尽管当前最先进的语言模型在众多的自然语言处理任务中取得了令人印象深刻的结果,但它们仍然不能解决在开放式文本生成中产生重复、枯燥甚至有时不一致的文本的问题。研究通常将此问题归因于最大似然训练目标,并通过使用随机解码方法或改变训练目标来提出替代方法。然而,仍然缺乏一致的评估指标来直接比较这些解决方案的有效性。在这项工作中,我们研究了不同的评价指标,已提出的机器生成的文本的质量,多样性和一致性进行评估。在此基础上,本文提出了一种实用的评估语言模型的流水线,并研究了如何利用不同的辅助训练目标来提高模型在各个维度上的性能。

英文摘要:

Although current state-of-the-art language models have achieved impressive results in numerous natural language processing tasks, still they could not solve the problem of producing repetitive, dull and sometimes inconsistent text in open-ended text generation. Studies often attribute this problem to the maximum likelihood training objective, and propose alternative approaches by using stochastic decoding methods or altering the training objective. However, there is still a lack of consistent evaluation metrics to directly compare the efficacy of these solutions. In this work, we study different evaluation metrics that have been proposed to evaluate quality, diversity and consistency of machine-generated text. From there, we propose a practical pipeline to evaluate language models in open-ended generation task, and research on how to improve the model's performance in all dimensions by leveraging different auxiliary training objectives.

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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