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关于预训练过程中build_instances 句子切分的问题 #214

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ShadowTeamCN opened this issue Oct 18, 2021 · 1 comment
Open

关于预训练过程中build_instances 句子切分的问题 #214

ShadowTeamCN opened this issue Oct 18, 2021 · 1 comment

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@ShadowTeamCN
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以MlmDataset 中 最简单的字粒度为例，不开启full-sentence开关
当样本长度超过max_length时候，样本被切分
然而此时的 [CLS] [SEP] token 却只存在一份，这是由之前的 document 传入的，样本拆分后并没有产生额外的头尾 token
这种行为符合预期么，理论上每个单独的样本都应该具有一个 [CLS] 头 [SEP] 尾
@ydli-ai
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ydli-ai commented Oct 20, 2021

有道理，这个问题我确认一下

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@ShadowTeamCN @ydli-ai