电脑/python/机器学习/机器学习入门.html

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<title>机器学习入门</title>
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<h1 class="title">机器学习入门</h1>
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<h2>Table of Contents</h2>
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<ul>
<li><a href="#orgheadline1">1. 参考资料</a></li>
</ul>
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<p>
机器学习问题就是给你一系列的样本数据，然后来预测下一组数据的可能情况。其中样本数据有很多维的输入，我们说它有很多属性（attribute）或特性（feature）。
</p>

<p>
机器学习分为 supervised learning 监督学习 和 unsupervised learning 不监督学习。监督学习又分为: 分类问题和回归分析问题。
</p>


<pre>
&gt;&gt;&gt; from sklearn import datasets
&gt;&gt;&gt; iris = datasets.load_iris()
&gt;&gt;&gt; digits = datasets.load_digits()
&gt;&gt;&gt; digits.data
array([[  0.,   0.,   5., ...,   0.,   0.,   0.],
       [  0.,   0.,   0., ...,  10.,   0.,   0.],
       [  0.,   0.,   0., ...,  16.,   9.,   0.],
       ..., 
       [  0.,   0.,   1., ...,   6.,   0.,   0.],
       [  0.,   0.,   2., ...,  12.,   0.,   0.],
       [  0.,   0.,  10., ...,  12.,   1.,   0.]])
&gt;&gt;&gt;
</pre>

<div class="outline-2">
<h2 id="orgheadline1">参考资料</h2>
<div class="outline-text-2" id="text-1">
<ol class="org-ol">
<li><a href="http://scikit-learn.org/stable/tutorial/basic/tutorial.html">an introduction to machine learning with scikit-learn</a></li>
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