擅长:python、mysql、java
<p>使用<a href="https://scikit-learn.org/stable/modules/generated/sklearn.preprocessing.minmax_scale.html#sklearn.preprocessing.minmax_scale" rel="nofollow noreferrer">^{<cd1>}</a></p>
<pre><code>In [1]: from sklearn.preprocessing import minmax_scale
In [2]: value = [0.344,-0.124,0.880,0,0.910,-0.800]
In [3]: in_range = [-1, 1]
In [4]: value_scaled = minmax_scale(value + in_range, feature_range=(-3,3))
In [5]: value_scaled[:-2]
Out[5]: array([ 1.032, -0.372, 2.64 , 0. , 2.73 , -2.4 ])
</code></pre>