generalization error

Generalization error

bias

Deviation: The more complex the model, the smaller the deviation model, the smaller the variance, so there will be overfitting

variance

Variance: the simpler the model, the model fit general, the smaller the variance of the model, the larger the deviation, so there will underfitting

error

error=bias+variance

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Origin www.cnblogs.com/gaowenxingxing/p/12355611.html