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LLMs commonly use the first token as an attention "sink", giving it a high attention score regardless of what token it is. arxiv.org/abs/2504.02732
arxiv.orgWhy do LLMs attend to the first token?Large Language Models (LLMs) tend to attend heavily to the first token in the sequence -- creating a so-called attention sink. Many works have studied this phenomenon in detail, proposing various ways...
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