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在 8.3.4.2. 顺序分区 中,offset 应赋值为
而非
我们注意到,
random.randint(0, num_steps)
的可能取值是包含 0 和 num_steps 的。比如当num_steps = 3
时,offset 被赋值为random.randint(0, 3)
,此时 offset 的可能取值为:0, 1, 2, 3。在这里,offset 取 0 和 3 是等效的,都代表偏移量为 0。为避免浪费 token,offset 最好赋值为
random.randint(0, num_steps - 1)
,这样能最大程度利用 corpus 序列(否则当 offset 正好取到 num_steps 时会浪费一个序列)。