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如何选择机器学习算法 - 大数据 & AI - 清泛网移动版 - 专注C/C++及内核技术

...原特征空间线性不可分,只要给个合适的核函数,它就能运行得很好。在动辄超高维的文本分类问题中特别受欢迎。可惜内存消耗大,难以解释,运行和调参也有些烦人,所以我认为随机森林要开始取而代之了。 But… ...
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为AppInventor2开发自己的拓展(Extension) - App Inventor 2 拓展 - 清泛IT社区,为创新赋能!

...实现任何的安卓功能。注意:java/kotlin写出来的拓展只能运行于安卓设备上,对于iOS设备需要使用swift开发iOS版本的拓展。环境配置安装好 Java开发环境 以及 Ant编译环境,这里以Windows为例,供参考:安装完JDK后配置环境变量 计...
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浅谈TCP优化 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...对TCP优化有一种雾里看花的感觉,实际上只要理解了TCP的运行方式就能掀开它的神秘面纱。Ilya Grigorik在「High Performance B...很多人常常对TCP优化有一种雾里看花的感觉,实际上只要理解了TCP的运行方式就能掀开它的神秘面纱。Ilya ...
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Spring Boot JPA - configuring auto reconnect

...andle SQLExceptions properly, and is only designed to be used when you are unable to configure your application to handle SQLExceptions resulting from dead and stale connections properly. share | i...
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Linux C/C++程序常用的调试手段及异常排查总结 - C/C++ - 清泛网 - 专注C/C++及内核技术

...升级的进程没有去设置环境变量,升级转换配置的模块在运行的过程中异常挂掉了,升级模块进程有依赖另一个进程,而且两者间需要保证确定的启动优先顺序等,但是不能确定啊,所以我改了下脚本,在两种最可能出现的场景...
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PHP编译安装时常见错误解决办法,php编译常见错误 - 更多技术 - 清泛网 - ...

... found! 代码如下: yum -y install unixODBC-devel configure: error: Unable to detect ICU prefix or /usr/bin/icu-config failed. Please verify ICU install prefix and make sure icu-config works. 代码如下: yum -y install libicu-devel configure: error: utf8mime2text() has new signature, b...
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How do I copy to the clipboard in JavaScript?

...mmand was ' + msg); } catch (err) { console.error('Fallback: Oops, unable to copy', err); } document.body.removeChild(textArea); } function copyTextToClipboard(text) { if (!navigator.clipboard) { fallbackCopyTextToClipboard(text); return; } navigator.clipboard.wr...
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Windbg Step 2 分析程序堆栈实战 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...l.pdb 我们发现MSVCR90D的pdb并没有被加载,是因为程序还没运行到, 3. 按F11 没有跳到源代码! 运行:src.path C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\crt\src 4. lm lm start end module name 01330000 0134b000 MyApp C (private pdb symb...
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Having a UITextField in a UITableViewCell

... after reading tons of messages of people trying to do that too, I'm still unable to have a fully working UITextField in some of my UITableViewCells , just like in this example: ...
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No connection could be made because the target machine actively refused it?

...quite short - values of 1, 2 or 3 are not unusual - and so the OS might be unable to queue your request for the 'accept' to consume. The backlog is a parameter on the listen function - all languages and platforms have basically the same API in this regard, even the C# one. This parameter is often ...