About Dataset Meta developed and publicly released the Llama 2 family of large language models (LLMs), a collection of pretrained and fine-tuned generative text models ranging in scale from 7 billion to 70 billion parameters. Our fine-tuned LLMs, called Llama-2-Chat, are optimized for dialogue use cases. Llama-2-Chat models outperform open-source chat models on most benchmarks we tested, and in our human evaluations for helpfulness and safety, are on par with some popular closed-source models like ChatGPT and PaLM.对数据集 Meta开发并公开发布了Llama 2系列大型语言模型(llm),这是一组预训练和微调的生成文本模型,其规模从70亿到700亿个参数不等。我们的微调llm,称为lama-2- chat,针对对话用例进行了优化。lama-2- chat模型在我们测试的大多数基准测试中都优于开源聊天模型,并且在我们对有用性和安全性的人工评估中,与ChatGPT和PaLM等一些流行的闭源模型不相上下。
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