ARP (Adjusted Runs Prevented) 囧rz

看板Sabermetrics作者lovelyhan (甲甲是個人才)時間18年前 (2007/05/04 13:10)推噓1(1推 0噓 0→)

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ARP -- Adjusted Runs Prevented. The number of runs that the reliever prevented over an average pitcher, given the bases/outs situation when he entered and left each game, adjusted for league and park. The exact formula for a reliever's ARP for a game is : (ER(sS,P) - ER(sF,P) + IF*ER(s0,P) - R) / pe(P) Where * ER(s,P) is the expected number of runs that will score in the remainder of an inning starting in bases/outs state s in park P, * sS is the bases/outs state when the reliever entered the game, * sF is the bases/outs state when the reliever left the game, * IF is the number of innings the reliever finished, * s0 is a special state for the beginning of an inning (distinct from the state for no outs, none on), * R is the number of runs that scored while the reliever was in the game, * pe(P) is the park effect for park P. 估狗了一下，前幾年就好像有人開始用ARP來評估中繼後援投手好了，本來想拿公式來幫幾位投手算一下數據，沒想到公式一查到手就傻眼了 orz s0的special state、連park effect也要算，而且被影響到的數據還佔大多數囧整個不知道怎麼下手痴漢大和板上的數據魔人們對ARP有研究嗎？還請前輩們提供點建議 orz -- 好きだからだよ﹑お前のことが。この地球上の誰よりも。 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 61.230.175.6