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Task03: 过拟合和欠拟合 一类是模型无法得到较低的训练误差,我们将这一现象称作欠拟合(underfitting); 另一类是模型的训练误差远小于它在测试数据集上的误差,我们称该现象为过拟合(ov

运算符是检查、改变、合并值的特殊符号或短语。例如,加号(+)将两个数相加(如 let i = 1 + 2)。更复杂的运算例子包括逻辑与运算符 &&(如 if enteredDoorCo

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