本文深入探讨Transformer模型中三种关键的注意力机制：自注意力、交叉注意力和因果自注意力。这些机制是GPT-4、Llama等大型语言模型（LLMs）的核心组件。通过理解这些注意力机制，我们可以更好地把握这些模型的工作原理和应用潜力。

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