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252 lines
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1 week ago
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<p>import numpy as np</p>
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<h1>参数意思分别 是从a 中以概率P，随机选择3个, p没有指定的时候相当于是一致的分布</h1>
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<p>a1 = np.random.choice(a=5, size=3, replace=False, p=None)<br>
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print(a1)</p>
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<h1>非一致的分布，会以多少的概率提出来</h1>
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<p>a2 = np.random.choice(a=5, size=3, replace=False, p=[0.2, 0.1, 0.3, 0.4, 0.0])<br>
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print(a2)</p>
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<h1>replacement 代表的意思是抽样之后还放不放回去，如果是False的话，那么出来的三个数都不一样，如果是</h1>
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<p>True的话， 有可能会出现重复的，因为前面的抽的放回去了。<br>
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————————————————<br>
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版权声明：本文为CSDN博主「qfpkzheng」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。<br>
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原文链接：<a target="_blank" rel="noopener" href="https://blog.csdn.net/qfpkzheng/article/details/79061601">https://blog.csdn.net/qfpkzheng/article/details/79061601</a></p>
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</article><div class="post-copyright"><div class="post-copyright__author"><span class="post-copyright-meta">文章作者: </span><span class="post-copyright-info"><a href="https://ismaxu.com">Ruoneo</a></span></div><div class="post-copyright__type"><span class="post-copyright-meta">文章链接: </span><span class="post-copyright-info"><a href="https://ismaxu.com/2020/12/28/Numpy/">https://ismaxu.com/2020/12/28/Numpy/</a></span></div><div class="post-copyright__notice"><span class="post-copyright-meta">版权声明: </span><span class="post-copyright-info">本博客所有文章除特别声明外，均采用 <a href="https://creativecommons.org/licenses/by-nc-sa/4.0/" target="_blank">CC BY-NC-SA 4.0</a> 许可协议。转载请注明来自 <a href="https://ismaxu.com" target="_blank">水榭听泉</a>！</span></div></div><div class="tag_share"><div class="post-meta__tag-list"></div><div class="post_share"><div class="social-share" data-image="https://i.loli.net/2020/05/01/gkihqEjXxJ5UZ1C.jpg" data-sites="facebook,twitter,wechat,weibo,qq"></div><link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/butterfly-extsrc/sharejs/dist/css/share.min.css" media="print" onload="this.media='all'"><script src="https://cdn.jsdelivr.net/npm/butterfly-extsrc/sharejs/dist/js/social-share.min.js" defer></script></div></div><nav class="pagination-post" id="pagination"><div class="prev-post pull-left"><a href="/2020/12/29/Heterogeneous%20graph%20inference%20with%20matrix%20completion%20for%20computational%20drug%20repositioning/"><img class="prev-cover" src="https://i.loli.net/2020/05/01/gkihqEjXxJ5UZ1C.jpg" onerror="onerror=null;src='/img/404.jpg'" alt="cover of previous post"><div class="pagination-info"><div class="label">上一篇</div><div class="prev_info">Heterogeneous graph inference with matrix completion for computational drug repositioning</div></div></a></div><div class="next-post pull-right"><a href="/2020/12/21/%E9%81%87%E5%88%B0%E7%9A%84%E9%94%99%E8%AF%AF%E4%BB%A5%E5%8F%8A%E8%A7%A3%E5%86%B3%E5%8A%9E%E6%B3%95/"><img class="next-cover" src="https://i.loli.net/2020/05/01/gkihqEjXxJ5UZ1C.jpg" onerror="onerror=null;src='/img/404.jpg'" alt="cover of next post"><div class="pagination-info"><div class="label">下一篇</div><div class="next_info">遇到的错误以及解决办法</div></div></a></div></nav><hr/><div id="post-comment"><div class="comment-head"><div class="comment-headline"><i class="fas fa-comments fa-fw"></i><span> 评论</span></div><div id="comment-switch"><span class="first-comment">Twikoo</span><span class="switch-btn"></span><span class="second-comment">Gitalk</span></div></div><div class="comment-wrap"><div><div id="twikoo-wrap"></div></div><div><div id="gitalk-container"></div></div></div></div></div><div class="aside-content" id="aside-content"><div class="card-widget card-info"><div class="is-center"><div class="avatar-img"><img src="/img/avatar.jpg" onerror="this.onerror=null;this.src='/img/friend_404.gif'" alt="avatar"/></div><div class="author-info__name">Ruoneo</div><div class="author-info__description">嗨! 你好!</div></div><div class="card-info-data site-data is-center"><a href="/archives/"><div class="headline">文章</div><div class="length-num">64</div></a><a href="/tags/"><div class="headline">标签</div><div class="length-num">26</div></a><a href="/categories/"><div class="headline">分类</div><div class="length-num">4</div></a></div><div class="card-info-social-icons is-center"><a class="social-icon" href="https://github.com/ruoneo" target="_blank" title="Github"><i class="fab fa-github"></i></a><a class="social-icon" href="mailto:xum321@gmail.com" target="_blank" title="Email"><i class="fas fa-envelope"></i></a></div></div><div class="card-widget card-announcement"><div class="item-headline"><i class="fas fa-bullhorn fa-shake"></i><span>公告</span></div><div class="announcement_content">感谢来访。希望这里有对你有帮助的内容。</div></div><div class="sticky_layout"><div class="card-widget" id="card-toc"><div class="item-headline"><i class="fas fa-stream"></i><span>目录
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|
|
||
|
|
const runFn = () => {
|
||
|
|
init()
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
const loadTwikoo = () => {
|
||
|
|
if (typeof twikoo === 'object') {
|
||
|
|
setTimeout(runFn,0)
|
||
|
|
return
|
||
|
|
}
|
||
|
|
getScript('https://cdn.jsdelivr.net/npm/twikoo/dist/twikoo.all.min.js').then(runFn)
|
||
|
|
}
|
||
|
|
|
||
|
|
if ('Twikoo' === 'Twikoo' || !false) {
|
||
|
|
if (false) btf.loadComment(document.getElementById('twikoo-wrap'), loadTwikoo)
|
||
|
|
else loadTwikoo()
|
||
|
|
} else {
|
||
|
|
window.loadOtherComment = () => {
|
||
|
|
loadTwikoo()
|
||
|
|
}
|
||
|
|
}
|
||
|
|
})()</script><script>function addGitalkSource () {
|
||
|
|
const ele = document.createElement('link')
|
||
|
|
ele.rel = 'stylesheet'
|
||
|
|
ele.href= 'https://cdn.jsdelivr.net/npm/gitalk/dist/gitalk.min.css'
|
||
|
|
document.getElementsByTagName('head')[0].appendChild(ele)
|
||
|
|
}
|
||
|
|
|
||
|
|
function loadGitalk () {
|
||
|
|
function initGitalk () {
|
||
|
|
var gitalk = new Gitalk(Object.assign({
|
||
|
|
clientID: 'f9bab17720653ab07b39',
|
||
|
|
clientSecret: 'e77fbcac5c4043ddf8d845aee7d6d5f118f607e2',
|
||
|
|
repo: 'ruoneo-comment-repo',
|
||
|
|
owner: 'ruoneo',
|
||
|
|
admin: ['ruoneo'],
|
||
|
|
id: '7b706da28eb818465c15b7a21a60bbc6',
|
||
|
|
updateCountCallback: commentCount
|
||
|
|
},null))
|
||
|
|
|
||
|
|
gitalk.render('gitalk-container')
|
||
|
|
}
|
||
|
|
|
||
|
|
if (typeof Gitalk === 'function') initGitalk()
|
||
|
|
else {
|
||
|
|
addGitalkSource()
|
||
|
|
getScript('https://cdn.jsdelivr.net/npm/gitalk/dist/gitalk.min.js').then(initGitalk)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function commentCount(n){
|
||
|
|
let isCommentCount = document.querySelector('#post-meta .gitalk-comment-count')
|
||
|
|
if (isCommentCount) {
|
||
|
|
isCommentCount.innerHTML= n
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ('Twikoo' === 'Gitalk' || !false) {
|
||
|
|
if (false) btf.loadComment(document.getElementById('gitalk-container'), loadGitalk)
|
||
|
|
else loadGitalk()
|
||
|
|
} else {
|
||
|
|
function loadOtherComment () {
|
||
|
|
loadGitalk()
|
||
|
|
}
|
||
|
|
}</script></div></div></body></html>
|