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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Parametric family ： ウィキペディア英語版 Parametric family In mathematics and its applications, a parametric family or a parameterized family is a family of objects (a set of related objects) whose definitions depend on a set of parameters. Common examples are parametrized (families of) functions, probability distributions, curves, shapes, etc. ==In probability and its applications== For example, the probability density function $f\_X$ of a random variable ''X'' may depend on a parameter $\backslash theta$. In that case, the function may be denoted $f\_X(\; \backslash cdot\; \backslash ,\; ;\; \backslash theta)$ to indicate the dependence on the parameter $\backslash theta$. $\backslash theta$ is not a formal argument of the function as it is considered to be fixed. However, each different value of the parameter gives a different probability density function. Then the ''parametric family'' of densities is the set of functions $\backslash$, where $\backslash Theta$ denotes the set of all possible values that the parameter $\backslash theta$ can take. In particular the normal distribution is a family of similarly shaped distributions parametrized by their mean and their variance. In decision theory, two-moment decision models can be applied when the decision-maker is faced with random variables drawn from a location-scale family of probability distributions. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Parametric family」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.