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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 indicator vector ： ウィキペディア英語版 indicator vector In mathematics, the indicator vector or characteristic vector or incidence vector of a subset ''T'' of a set ''S'' is the vector $x\_T\; :=\; (x\_s)\_$ such that $x\_s\; =\; 1$ if $s\; \backslash in\; T$ and $x\_s\; =\; 0$ if $s\; \backslash notin\; T.$ If ''S'' is countable and its elements are numbered so that $S\; =\; \backslash$, then $x\_T\; =\; (x\_1,x\_2,\backslash ldots,x\_n)$ where $x\_i\; =\; 1$ if $s\_i\; \backslash in\; T$ and $x\_i\; =\; 0$ if $s\_i\; \backslash notin\; T.$ To put it more simply, the indicator vector of ''T'' is a vector with one element for each element in ''S'', with that element being one if the corresponding element of ''S'' is in ''T'', and zero if it is not. An indicator vector is a special (countable) case of an indicator function. ==Notes== 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「indicator vector」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.