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Deep Learning（深度学习）学习笔记整理系列之（四） - 大数据 & AI - 清泛...
...些自动学习得到的特征可以大大提高精确度，甚至在分类问题中比目前最好的分类算法效果还要好！
AutoEncoder存在一些变体，这里简要介绍下两个：
Sparse AutoEncoder稀疏自动编码器：
当然，我们还可以继续加上一些...
Use PHP to create, edit and delete crontab jobs?
Is it possible to use PHP to create, edit and delete crontab jobs?
12 Answers
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PHP + MySQL transactions examples
I really haven't found normal example of PHP file where MySQL transactions are being used. Can you show me simple example of that?
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Formatting code snippets for blogging on Blogger [closed]
...ript src='http://syntaxhighlighter.googlecode.com/svn/trunk/Scripts/shBrushPhp.js' type='text/javascript'></script>
<script src='http://syntaxhighlighter.googlecode.com/svn/trunk/Scripts/shBrushPython.js' type='text/javascript'></script>
<script src='http://syntaxhighlighter....
PHP multidimensional array search by value
... or just use == instead ===.
Based on angoru answer. In later versions of PHP (>= 5.5.0) you can use one-liner.
$key = array_search('100', array_column($userdb, 'uid'));
Here is documentation: http://php.net/manual/en/function.array-column.php.
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北漂90后张鸿润：创业不做于佳文 坚持就好 - 资讯 - 清泛网 - 专注C/C++及内核技术
...他“忽悠吹牛，虚报融资金额，过度营销，缺乏信誉”等问题，“对产品进行包括饥饿营销、病毒营销等等在内的过度营销，炒作、水军泛滥，甚至把负面作为吸引眼球的手段，至于传播的是正能量还是负能量则不管不问”。
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How do I convert a string to a number in PHP?
...Script we can use Number() , but is there any similar method available in PHP?
30 Answers
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The first day of the current month in php using date_modify as DateTime object
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Requires PHP 5.3 to work ("first day of" is introduced in PHP 5.3). Otherwise the example above is the only way to do it:
<?php
// First day of this month
$d = new DateTime('first day of this month');
echo $d->forma...
Wi-Fi 是什么的缩写 - 创意 - 清泛网 - 专注C/C++及内核技术
...试产品是否符合标准，导致 802.11 产品间的互通频频出现问题，而联盟的成立就是为了填补这一空缺。联盟还将推广符合 802.11 标准的无线网络技术作为己任，因此他们认为需要一个朗朗上口的名字来代替拗口的专业术语（呃…...
Replacing all non-alphanumeric characters with empty strings
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He's probably used to programming in PHP.
– William
Nov 26 '09 at 20:31
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