有一个理解上的歧义点,对位置编码的表述容易产生歧义。 #147
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绝对位置编码和相对位置编码的理解容易产生歧义。
BERT用的Embedding是绝对位置编码,加上偏置之后也并不是相对位置编码。相对外置编码,如,RoPE,能够突破最大长度的限制,而绝对位置编码不行。