ML_StudyNotes/Colab.html at main · flybitcone/ML_StudyNotes · GitHub

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<html>
  <head>
<title>Useful Linux Commands (in Colab)</title>
</head>
<body>
<p>关于x.mean(dim=0,keepdim=True)的一些问题</p>

<p></p>
<table border="2">
<tr>
<th>define 一个3*4的数组</th>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>mean</td>
</tr>


<tr>
<td>&nbsp;</td>
<td>1</td><!-- tr表示行。td表示列 -->
<td>2</td>
<td>3</td><!-- tr表示行。td表示列 -->
<td>4</td>
<td>2.5</td>
</tr>
<tr>
<td>&nbsp;</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
<td>6.5</td>
</tr>
<tr>
<td>&nbsp;</td>
<td>9</td>
<td>10</td>
<td>11</td>
<td>12</td>
<td>10.5</td>
</tr>
<tr>
<td>mean</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
</tr>
</table>
<p>mean(dim=0)-->[5., 6., 7., 8.]</p>
<p>mean(dim=1)-->[ 2.5000,  6.5000, 10.5000]</p>
<p>mean(dim=0,keepdim=True)-->[[5., 6., 7., 8.]]</p>
<p>mean(dim=1,keepdim=True)-->[[ 2.5000],[ 6.5000],[10.5000]]</p>

<p>这是段落3。</p>

<p>段落元素由 p 标签定义。</p>
</body>

<body>
<p>body 元素的内容会显示在浏览器中。</p>
<p>title 元素的内容会显示在浏览器的标题栏中。</p>
<h1>This is a heading</h1>
<h2>This is a heading</h2>
<h3>This is a heading</h3>
<h7>This is a heading</h7>
<p>这是段落1。</p>
<p>这是段落2。</p>
<p>这是段落3。</p>

<p>段落元素由 p 标签定义。</p>
</body>