擅长:python、mysql、java
<p>这已在<a href="http://scikit-learn.org/dev/modules/generated/sklearn.preprocessing.normalize.html#sklearn.preprocessing.normalize">scikit-learn sklearn.preprocessing.normalize</a>中实现。</p>
<pre><code>from sklearn.preprocessing import normalize
w_normalized = normalize(w, norm='l1', axis=1)
</code></pre>
<p><code>axis=1</code>应按行规格化,<code>axis=0</code>应按列规格化。使用可选参数<code>copy=False</code>就地修改矩阵。</p>