擅长:python、mysql、java
<p>也可以使用<a href="http://scikit-learn.org/stable/modules/generated/sklearn.preprocessing.MinMaxScaler.html" rel="nofollow noreferrer">sklearn.preprocessing.MinMaxScaler</a>(默认为<code>feature_range=(0, 1)</code>):</p>
<pre><code>from sklearn import preprocessing
min_max_scaler = preprocessing.MinMaxScaler()
v = foo[:,1]
v_scaled = min_max_scaler.fit_transform(v)
foo[:,1] = v_scaled
print(foo)
</code></pre>
<p>输出:</p>
<pre><code>[[ 0. 0. ]
[ 0.13216 0.06609523]
[ 0.25379 1. ]
[ 0.30874 0.09727968]]
</code></pre>
<p>优点是可以扩展到任何范围。</p>