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	<title>Nomalize - 四号程序员</title>
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		<title>机器学习中Nomalize(规范化)和Standardize(标准化)</title>
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		<pubDate>Mon, 26 Jan 2015 12:31:02 +0000</pubDate>
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		<category><![CDATA[Nomalize]]></category>
		<category><![CDATA[Standardize]]></category>
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					<description><![CDATA[1. 标准化(Standardize)： 标准化给定数据集中所有数值属性(或者分别对每个feature列处理)的值到一个0均值和单位方差的正态分布。 2.规范化(Nomalize): 规范化给定数据集中的所有数值(或者分别对每个feature列处理)属性值，类属性除外。结果值默认在区间[0,1]，但是利用缩放和平移参数，我们能将数值属性值规范到任何区间。[......] 继续阅读]]></description>
		
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