第三人稱(chēng)復數：variances
variance基本解釋
名詞變化，變動(dòng); 不一致; 分歧; 方差
variance的解釋
variance相關(guān)詞組
1. at variance with : 與...有分歧；
2. at variance : 有分歧, 不和；
3. set at variance : 使不和；
variance相關(guān)例句
名詞
1. variance什么意思
1. We have never been at variance with our neighbors.
我們從未和鄰居發(fā)生過(guò)齟齬。
variance網(wǎng)絡(luò )解釋
1. 方差：16 方差(variance)是一組數據中各變量與其均值離差平方的平均數,方差的算術(shù)平方根叫標準差(standard deviation). 方差與標準差是反映數值型數據離散程度的主要的也是常用的方法,是描述數據分布特征的重要的統計量.
2. 變異數：心率變異性分析則是通過(guò)測量連續正常的QRS波群周期之間的變化(beat to fluctuation)變異數(Variance),從而反應心率的變化. 它不同于常用的以時(shí)間為單位的平均心率變化指標(如最大心率或最小心率等),HRV的大小并不反映心率的快慢.
3. 差異：除此之外,Breiman [Bre96a] 還從偏向(bias)和差異(variance)的角度對泛化誤差進(jìn)行了分析. 他指出,不穩定預測函數的偏向較小、差異較大,Bagging正是通過(guò)減小差異來(lái)減小泛化誤差的. 在此之后,
variance詞典解釋
1. （與…）不一致，相矛盾
If one thing is at variance with another, the two things seem to contradict each other.
e.g. Many of his statements were at variance with the facts...
他的說(shuō)法有很多和事實(shí)不符。
e.g. This idealistic concept is at variance with reality.
這種理想主義的觀(guān)念和現實(shí)相矛盾。
2. 差異;不同
The variance between things is the difference between them.
e.g. ...the variances in the stock price.
股票價(jià)格的變化
e.g. ...total revenue variance.
總收入的差異
variance英英釋義
noun
1. an activity that varies from a norm or standard
e.g. any variation in his routine was immediately reported
Synonym: variation
2. an official dispensation to act contrary to a rule or regulation (typically a building regulation)
e.g. a zoning variance
3. the quality of being subject to variation
Synonym: variabilityvariableness
4. a difference between conflicting facts or claims or opinions
e.g. a growing divergence of opinion
Synonym: discrepancydisagreementdivergence
5. the second moment around the mean
the expected value of the square of the deviations of a random variable from its mean value
6. discord that splits a group
Synonym: division
7. an event that departs from expectations
Synonym: discrepancyvariant