variance

/'vєәriәns/ uk　 词频 #5027

托福 TOEFL

variance 是什么意思

中文释义

n. 不一致, 变化, 变异, 分歧, 不和

[化] 方差; 变种

英文释义

n. the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value

n. an official dispensation to act contrary to a rule or regulation (typically a building regulation)

variance 的真实例句

以下例句摘自真实英文文章，看看 variance 在自然语境里怎么用：

VIF quantifies the inflation of the variance of the estimated coefficient due to collinearity with time.

—— Ancient DNA reveals pervasive directional selection across West Eurasia

If so, this defines where you must preserve fidelity and where you can tolerate variance.

—— Your Synthetic Data Passed Every Test and Still Broke Your Model

In this case, we can say that our model has low bias and high variance.

—— Lasso Regression: Why the Solution Lives on a Diamond

This may increase the bias on the training data, but it reduces the variance on unseen data.

—— Lasso Regression: Why the Solution Lives on a Diamond

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