matlab 均方根差

在Matlab中，均方根误差（Root Mean Square Error，RMS）可以通过以下公式计算：

e = a1(:,2) - b1(:,2); % 两份数据对应项的差值
e2 = dot(e, e); % 差值的平方和
n = numel(a1(:,2)); % 所有数据的个数
rms1 = sqrt(e2/n); % 均方根误差

其中，`a1`和`b1`是参考数据和计算数据。首先，计算两份数据对应项的差值`e`，然后求差值的平方和`e2`。最后，通过将平方和除以数据个数并取平方根，得到均方根误差`rms1`。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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