翻訳と辞書 Words near each other ・ Logos Foundation (Australia) ・ Logos Group ・ Logos International Study Bible ・ Logos Land ・ Logos Live ・ Logos Panic ・ Logisticus plicicollis ・ Logisticus proboscideus ・ Logisticus quentini ・ Logisticus rostratus ・ Logisticus sesquivittatus ・ Logisticus simplex ・ Logisticus spinipennis ・ Logisticus suturalis ・ Logisticus villiersi ・ Logit ・ Logit analysis in marketing ・ Logit-normal distribution ・ LogiTag ・ LogitBoost ・ Logitech ・ Logitech Driving Force GT ・ Logitech G19 ・ Logitech G25 ・ Logitech G27 ・ Logitech Harmony ・ Logitech Media Server ・ Logitech Thunderpad Digital ・ Logitech Unifying receiver ・ Logix Group Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Logit ： ウィキペディア英語版 Logit The logit ( ) function is the inverse of the sigmoidal "logistic" function or logistic transform used in mathematics, especially in statistics. When the function's parameter represents a probability , the logit function gives the log-odds, or the logarithm of the odds .〔(【引用サイトリンク】title=LOG ODDS RATIO )〕 ==Definition== The logit of a number ''p'' between 0 and 1 is given by the formula: :$\backslash operatorname(p)=\backslash log\backslash left(\; \backslash frac\; \backslash right)\; =\backslash log(p)-\backslash log(1-p)=-\backslash log\backslash left(\; \backslash frac\; -\; 1\backslash right).\; \backslash !\backslash ,$ The base of the logarithm function used is of little importance in the present article, as long as it is greater than 1, but the natural logarithm with base e is the one most often used. The choice of base corresponds to the choice of logarithmic unit for the value: base 2 corresponds to a bit, base e to a nat, and base 10 to a ban (dit, hartley); these units are particularly used in information-theoretic interpretations. For each choice of base, the logit function takes values between negative and positive infinity. The "logistic" function of any number $\backslash alpha$ is given by the inverse-logit: :$\backslash operatorname^(\backslash alpha)\; =\; \backslash frac\; =\; \backslash frac$ If ''p'' is a probability, then ''p''/(1 − ''p'') is the corresponding odds; the logit of the probability is the logarithm of the odds. Similarly, the difference between the logits of two probabilities is the logarithm of the odds ratio (''R''), thus providing a shorthand for writing the correct combination of odds ratios only by adding and subtracting: :$\backslash operatorname(R)=\backslash log\backslash left(\; \backslash frac/(1-p\_1)\}/(1-p\_2)\}\; \backslash right)\; =\backslash log\backslash left(\; \backslash frac\; \backslash right)\; -\; \backslash log\backslash left(\backslash frac\backslash right)=\backslash operatorname(p\_1)-\backslash operatorname(p\_2).\; \backslash !\backslash ,$ 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「Logit」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.