Re: [請益] 麻煩幫我翻譯兩小段 文章 plz...
電信產業中「客戶流失」（churn）與「無客戶流失」通常以抬升曲線表示。
抬升曲線描繪出在門檻以上所有具流失可能之客戶比例，相對的是門檻以上所有
具流失可能之電話用戶（subscribers）比例。該抬升曲線指出，若能聯繫一定比
例的電話用戶，則可捕捉所有流失客戶之比例。既然電信媒體（carrier）客服中
心員工數目有限，僅能聯繫特定比例之電話用戶，則能用以概算流失客戶比例的
抬升曲線在電信產業中裨益良多。
能清楚區別流失客戶與非流失客戶之抬升曲線，以及在5%客戶流失率不能區
別流失客戶與非流失客戶之抬升曲線分別如圖8(a)與8(b)所示。前者我們稱作完
全客戶流失指標（perfect churn rate）後者隨機客戶流失指標（random churn
rate）…
※ 引述《tias2277 (討厭唸書)》之銘言：
: 請幫幫我翻譯一下
: 我真的看不懂 他的意思
: 謝
: In the telecommunications industry,
: the “churn”and “no churn” prediction is
: usually expressed as a lift curve.
: The lift curve plots the fraction of all churners
: having churn probability above the threshold
: against the fraction of all subscribershaving
: churn probability above the threshold.
: The lift curve indicates the fraction of all churners
: can be caught if a certain fraction of all subscribers were contacted.
: Since the customer services centers of a carrier
: only have a fixed number of staff that is
: able to contact a fixed fraction of all subscribers,
: the lift curve, which can estimate the fraction of churners
: can becaught given the limited resources, is very useful in
: the telecommunications industry.
: The lift curve representing perfect discrimination of
: churners from nonchurners and that representing
: no discrimination of churners from nonchurners
: under a churn rate of 5% are shown in Fig. 8(a) and (b), respectively.
: We refer to the former and the latter as
: perfect churn predictor and random churn predictor
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