Machine Learing by Andrew Ng笔记 (一):introduce
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因为,之前下载过公开课版的,所以 对于第一节课“introduce”,算是比较了解了。
它主要介绍了:ML的基本概念,以及一些基本的用途,并且讲述了ML中包括的几种算法。
算法分为:监督式与非监督式。
监督式里面包括:
回归分析:通过测试数据集,得到回归函数(线性与非线性),从而根据输入值得到预测值;
分类分析(SVD):通过测试数据集,得到分类算法,根据输入值把数据归为不同的类(事先确定)
非监督主要讲的是聚类算法:测试数据集中并没有分类结果,算法需要自动的把数据聚成特定的类(事先不知道)
链接:https://class.coursera.org/ml-003/lecture/index
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