👱🏻♂️ 35%
👱🏿♂️ 60%
| 黑人被告 | 總人數 |
|:––––:|:–––:|:–––:|:–––:|
| 再犯 | 1901 |
| 未再犯 | 1714 |
| 總人數 | 3615 |
| 白人被告 | 總人數 |
|:––––:|:–––:|:–––:|:–––:|
| 再犯 | 966 |
| 未再犯 | 1488 |
| 總人數 | 2454 |
黑人被告 | 高風險 | 低風險 | 總人數 |
---|---|---|---|
再犯 | 1369 | 532 | 1901 |
未再犯 | 805 | 990 | 1714 |
總人數 | 2174 | 1522 | 3615 |
FP Rate: 44.85% FN Rate: 27.99%
白人被告 | 高風險 | 低風險 | 總人數 |
---|---|---|---|
再犯 | 505 | 461 | 966 |
未再犯 | 349 | 1139 | 1488 |
總人數 | 854 | 1600 | 2454 |
FP Rate: 23.45% FN Rate: 47.72% |
👱🏿♂️ 👱🏻♂️
判刑過長 逍遙法外再犯
👱🏿♂️ 👱🏻♂️
PPV 0.63 PPV 0.59
NPV 0.65 NPV 0.71
根據 Jon Kleinberg 的證明兩個群體不可能在沒有校準偏誤的情形下,又擁有相同的 false negative 跟 false positive 發生率。因此除非黑人與白人的犯罪率相同,我們才能開發出完美公平的演算法。
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