V2EX linearity

Linearity

释义 Definition

linearity /lnirti/:线性;线性关系;线性特征。常指两个量之间呈“成比例、直线关系”的性质;也可指系统满足“叠加性(superposition)”与“齐次性(homogeneity)”等线性条件的特征。(在数学、物理、工程、经济学中非常常见。)

例句 Examples

The model assumes linearity between input and output.
该模型假设输入与输出之间具有线性关系。

To test linearity, the researchers fitted a regression line and checked whether residuals stayed random across the full range of values.
为检验线性,研究人员拟合了一条回归直线,并检查残差在整个取值范围内是否保持随机分布。

发音 Pronunciation (IPA)

/lnirti/

词源 Etymology

linearity 来自 linear(线性的)+ 名词后缀 -ity(表示“性质、状态”)。而 linear 源于拉丁语 linea(线、细绳),其核心意象是“像线一样按直线延伸、按比例变化”。因此 linearity 强调“符合直线/比例规律的性质”。

相关词 Related Words

文学与著作 Literary Works

  • The Feynman Lectures on Physics(费曼《物理学讲义》)在讨论物理定律与近似方法时常涉及“线性/非线性”的思想框架。
  • Linear Systems Theory(线性系统理论相关经典教材/专著)“linearity”是核心术语,用于定义与分析线性系统。
  • Numerical Recipes(《数值算法/数值方法》系列)在数值线性代数、线性方程组与模型拟合章节中频繁出现。
  • An Introduction to Statistical Learning(《统计学习导论》)在回归与模型假设讨论中常提到线性关系(linearity assumption)。
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