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更新 ApacheCN社区-ML群换届-名单
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jiangzhonglian committed Jul 4, 2018
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31 changes: 29 additions & 2 deletions README.md
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* [@片刻](https://github.com/jiangzhonglian)
* [@那伊抹微笑](https://github.com/wangyangting)
* [@瑶妹](https://github.com/chenyyx)

* [2017-04-08_第一期的总结](/report/2017-04-08_第一期的总结.md)

> Ml 第二期 (2017-08-14)
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> Ml 第三期 (2018-04-16)
## ApacheCN社区-ML群换届

* 欢迎贡献者不断的追加
* [@瑶妹](https://github.com/chenyyx)
* [@飞龙](https://github.com/wizardforcel)
* [@片刻](https://github.com/jiangzhonglian)
* [@伪文艺.](https://github.com/Watermelon233)
* [@那伊抹微笑](https://github.com/wangyangting)
* [@LAMDA-健忘症]() 永久留任-非常感谢对群的贡献

> Ml 第一届 (2017-07-04 结束)
* [@易漠]()
* [@Mike](https://github.com/mikechengwei)
* [@Books]()
* [@李孟禹]()
* [@张假飞]()
* [@Glassy]()
* [@红色石头]()
* [@微光同尘]()

> Ml 第二届 (刚开始)
* [@张假飞]()
* [@李孟禹]()
* [@小明教主]()
* [@平淡的天]()
* [@凌少skierゞ]()
* [@じ☆νЁ坐看云起]()

**欢迎贡献者不断的追加**

> 加入方式
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4 changes: 3 additions & 1 deletion src/py2.x/ML/7.RandomForest/randomForest.py
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Expand Up @@ -78,7 +78,9 @@ def test_split(index, value, dataset):
'''
Gini指数的计算问题,假如将原始数据集D切割两部分,分别为D1和D2,则
Gini(D|切割) = (|D1|/|D| ) * Gini(D1) + (|D2|/|D|) * Gini(D2)
学习地址:http://bbs.pinggu.org/thread-5986969-1-1.html
学习地址:
http://bbs.pinggu.org/thread-5986969-1-1.html
http://www.cnblogs.com/pinard/p/6053344.html
而原文中 计算方式为:
Gini(D|切割) = Gini(D1) + Gini(D2)
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