V2EX global maximum

Global Maximum

释义 Definition

全局最大值:在某个函数的整个定义域(或所有可行解)范围内,函数所能达到的最高值;对应取得该值的位置称为全局最大点/全局最优解。(不同于只在局部范围内最大的“局部最大值”。)

发音 Pronunciation (IPA)

/lobl mksmm/

例句 Examples

The global maximum of this function is 10.
这个函数的全局最大值是 10。

Even if the curve has several peaks, only the highest one over the entire interval is the global maximum.
即使这条曲线有多个峰值,在整个区间内最高的那个才是全局最大值。

词源 Etymology

global 源自拉丁语 globus(“球体”),引申为“整体的、全局的”;maximum 来自拉丁语 maximus(“最大的”)。合起来 global maximum 字面意思是“整体范围内最大的(值)”,常用于数学分析、优化理论与机器学习等语境。

相关词 Related Words

文学与著作中的用例 Literary Works

  • Convex Optimization(Stephen Boyd, Lieven Vandenberghe)在优化问题中讨论全局最优/全局最大值的概念与条件。
  • Numerical Optimization(Jorge Nocedal, Stephen J. Wright)涉及用数值方法寻找全局最大/最小及其困难性。
  • Pattern Recognition and Machine Learning(Christopher M. Bishop)在模型训练与目标函数的全局最优(含全局最大化)语境中出现相关表述。
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