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能不能解释一下这个代码啥意思啊 #77

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victory458537 opened this issue Aug 10, 2024 · 0 comments
Open

能不能解释一下这个代码啥意思啊 #77

victory458537 opened this issue Aug 10, 2024 · 0 comments

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@victory458537
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在这门课中，gpt2的模型代码中出现这个代码，causal_mask = bias[:, :, key_length - query_length: key_length, :key_length].bool()，这个的bias和causal_mask的张量形状都是一样的，为啥还需要截取一下啊，有啥用啊？
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