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arXiv 2211.14865cs.CL
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理解BLOOM:不同NLP任务的实证研究

Understanding BLOOM: An empirical study on diverse NLP tasks

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Parag Pravin Dakle, SaiKrishna Rallabandi, Preethi Raghavan

摘要:

我们通过最近发布的BLOOM模型的镜头来查看大语言模型(LLM)的前景,以了解BLOOM和其他仅解码器LLM与BERT风格的仅编码器模型相比的性能。我们通过在几个NLP基准数据集和流行排行榜上评估较小的BLOOM模型变体(\textit{350m/560m}和\textit{1b3/1b7})来实现这一点。我们做了以下观察:(1)与GPT和BERT等其他LLM不同,BLOOM性能不随参数大小而变化。对BLOOM模型进行微调的实验表明,560 m变体的性能与1b 7变体相似或更好,(2)Zero-shot跨语言和多语言微调实验表明,BLOOM与单语言GPT-2模型相当或更差,(3)使用RealToxicityProblems数据集对基于Problems的文本生成进行毒性分析,结果表明,由BLOOM生成的文本至少有17%毒性低于GPT-2和GPT-3模型。

英文摘要:

We view the landscape of large language models (LLMs) through the lens of the recently released BLOOM model to understand the performance of BLOOM and other decoder-only LLMs compared to BERT-style encoder-only models. We achieve this by evaluating the smaller BLOOM model variants (\textit{350m/560m} and \textit{1b3/1b7}) on several NLP benchmark datasets and popular leaderboards. We make the following observations: (1) BLOOM performance does not scale with parameter size, unlike other LLMs like GPT and BERT. Experiments fine-tuning BLOOM models show that the 560m variant performs similarly to or better than the 1b7 variant, (2) Zero-shot cross-lingual and multi-lingual fine-tuning experiments show that BLOOM is at par or worse than monolingual GPT-2 models, and (3) Toxicity analysis of prompt-based text generation using the RealToxicityPrompts dataset shows that the text generated by BLOOM is at least 17\% less toxic than GPT-2 and GPT-3 models.

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