因此我们可以获得关于训练数据集的平均损失，称为经验风险(empiricalrisk)或经验损失(empirical loss),记作:则是模型关于训练样本的平均损失。根据统计学中的大数定理，当样本容量很大的时候，可以将经验损失作为期望损失。
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是一个负面的结果，由一个已知或估计的概率发生的基础上的经验或一些理论。这种可能损失作为结果是不确定的。
Negative outcome that has a known or estimated probability of occurrence based on experience or some theory. The likelihood of loss as a consequence of uncertainty.
比如，如果有人遭受损失或透过就业难离婚他们可能无法获得良好的经验，持续睡少则三个星期至六个月。
For instance, if someone is suffering through a job loss or a difficult divorce, they may experience a persistent inability to get good sleep for anywhere from three weeks to six months.
如自住家居装修， 请有征询有经验装修师傅或买家本身是熟识此行业人士， 以免经受不必要损失。
If it is house and home renovations please inquire the experienced decoration master or you are familiar with the people of this profession to avoid unnecessary damage.
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