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呢篇文 需要熟悉呢方面嘅人幫手寫。 |
嘅數值响一開始嗰陣係 1,然後會慢慢噉跌,最後變成接近 0 嘅數值,但永遠唔會變成負數。 另一個重要特徵係永遠唔會升-因為生還分析本質上就係模擬緊啲慢慢噉趨向終結事件(例如慢慢噉趨向死亡)嘅現象,即係[1]
-而呢句嘢講嘅,係生還分析最重要嘅特徵之一。响實際應用上,啲人通常會設定生還函數係指數函數[2]、威布分佈或者伽瑪分佈呀噉,例如當中指數函數望落會係噉嘅樣:
進一步噉分析生還函數嘅話:
... 呀噉。
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