BCEWithLogitsLoss reduction
时间: 2023-11-13 11:15:27 浏览: 32
BCEWithLogitsLoss中的reduction参数是用来指定如何计算损失的。reduction参数有四个选项可供选择:'none'、'mean'、'sum'和'default'。其中,默认值是'default',等价于'mean'。若选择'none',则不进行任何降维操作,返回每个样本的损失值。若选择'mean',则计算所有样本的平均损失。若选择'sum',则计算所有样本的总损失。而若选择'default',则根据输入的target张量的维度来确定是计算平均损失还是总损失。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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