ata<span class="token punctuation">.</span>datasets<span class="token punctuation">[</span>index<span class="token punctuation">]</span><span class="token punctuation">.</span>data<span class="token punctuation">.</span><span class="token function">push</span><span class="token punctuation">(</span>Utils<span class="token punctuation">.</span><span class="token function">rand</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">,</span> <span class