mean均值,variance方差,stddev标准差,corr(Pearson相关系数),skewness偏度,kurtosis峰度 ...
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其他好文 时间:
2016-11-25 20:00:48
阅读次数:
153
How I explained OOD to my wife Learning Object Oriented Design principles through interesting conversations. Learning Object Oriented Design principle ...
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其他好文 时间:
2016-10-14 14:30:15
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155
IaaS, PaaS, SaaS (Explained and Compared) SaaS: Software as a Service Cloud application services, or Software as a Service (SaaS), represent the large ...
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其他好文 时间:
2016-09-10 20:49:38
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254
##题目描述 Function composition is a mathematical operation that mainly presents itself in lambda calculus and computability. It is explained well here, b ...
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其他好文 时间:
2016-08-30 13:33:18
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105
(1)数据标准化(Standardization or Mean Removal and Variance Scaling) 进行标准化缩放的数据均值为0,具有单位方差。 scale函数提供一种便捷的标准化转换操作,如下: [python] view plain copy >>> from skle ...
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其他好文 时间:
2016-08-23 01:16:17
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191
原文:http://pyzh.readthedocs.io/en/latest/the-python-yield-keyword-explained.html 3. (译)Python关键字yield的解释(stackoverflow) 译者: hit9 原文: http://stackoverfl ...
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编程语言 时间:
2016-08-15 20:51:55
阅读次数:
260
boosting和bagging的差别: bagging中的模型是强模型,偏差低,方差高。目标是降低方差。在bagging中,每个模型的bias和variance近似相同,但是互相相关性不太高,因此一般不能降低Bias,而一定程度上能降低variance。典型的bagging是random fore ...
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其他好文 时间:
2016-08-02 15:13:02
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817
If you are a fan of Harry Potter, you would know the world of magic has its own currency system -- as Hagrid explained it to Harry, "Seventeen silver ...
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其他好文 时间:
2016-08-01 11:57:28
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120
方差膨胀因子(Variance Inflation Factor,VIF):是指解释变量之间存在多重共线性时的方差与不存在多重共线性时的方差之比。 共线性:两个自变量之间有很大程度的相似性(70%)。有时候在进行线性模型运算中,为了让自变量少,就看哪些变量相互之间具有共线性,具有共线性的变量中可以留 ...
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其他好文 时间:
2016-07-23 17:56:04
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286
As explained here by Rick: Start with brew doctor which will show you errors with your brew setup. You might see something like this: "Warning: /usr/l ...
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其他好文 时间:
2016-07-09 16:31:21
阅读次数:
220