Re: [問題] B-R的BtRns
※ 引述《AdamMiller (AdamMiller)》之銘言：
: Baseball Reference有計算打者的adjusted batting runs
: 請問有人知道他用的公式，每個事件給的價值是多少嗎？
: 找不到詳細的解釋
from ESPN Baseball Encyclopedia 2006版
Batting Runs：The formula for calculating batting runs is
0.33*(BB+HBP)＋0.47*H＋0.38*2B＋0.55*3B＋0.93*HR－ABF*(AB－H)
ABF, know as the league batting factor, makes the value of an average
batter equal 0. ABF is computed with the following formula (all statics
in the equation are league statistics)：
[0.33*(BB+HBP)＋0.47*H＋0.38*2B＋0.55*3B＋0.93*HR] / (AB－LGF*H)
LGF, the league factor, adjusts for the quality of league play, and
equals 1 except for the Union Association (1884), for which it equals
0.8, and the Federal League (1914-15), for which it equals 0.9.
Adjusted batting runs, which appear in the batting register, are
calculated with the following formula：
BR－(batters' park factor－1)*RPA*PA/batters' park factor
RPA is the number of runs per plate appearance in the league.
另外也可以參考這個網頁
http://walaykao.blogspot.com/2006_02_01_archive.html
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12/19 21:22, , 1F
12/19 21:22, 1F
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