大约有 5,000 项符合查询结果(耗时:0.0131秒) [XML]

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Is there a rule-of-thumb for how to divide a dataset into training and validation sets?

... a series of runs with different amounts of training data: randomly sample 20% of it, say, 10 times and observe performance on the validation data, then do the same with 40%, 60%, 80%. You should see both greater performance with more data, but also lower variance across the different random samples...
https://www.tsingfun.com/it/tech/1337.html 

淘宝大秒系统设计详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...我们可以提前做好预热。 系统隔离。系统隔离更多是运行时的隔离,可以通过分组部署的方式和另外99%分开。秒杀还申请了单独的域名,目的也是让请求落到不同的集群中。 数据隔离。秒杀所调用的数据大部分都是热数...
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Does C# have an equivalent to JavaScript's encodeURIComponent()?

...String("Stack + Overflow") --> Also encodes "+" to "%2b" ---->Stack%20%2B%20%20Overflow Only the last is correct when used as an actual part of the URL (as opposed to the value of one of the query string parameters) ...
https://www.tsingfun.com/it/cpp/2095.html 

与复制构造函数相关的错误.例如:0x77D9FCAA (ntdll.dll) (prog31.exe 中)处...

...然需要定义自己的复制构造函数和赋值操作符解释。重新运行程序,即可得到正确结果并避免堆损坏错误。 复制构造函数 堆损坏
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Set transparent background of an imageview on Android

... If you want to add 20% or 30% transparency, you should pre-pend two more characters to the hexadecimal code, like CC. Note android:background="#CCFF0088" in XML where CC is the alpha value, FF is the red factor, 00 is the green factor, and 88 i...
https://www.tsingfun.com/it/os_kernel/1290.html 

Dokan虚拟磁盘开发实战 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...改名,则会触发MoveFile这个回调函数。 实现时还有一个调试信息如何显示的问题,对控制台程序,可以直接写到控制台;而对带窗口的程序,可以写日志文件,也可以发Windows消息。我采用了SendMessage来处理调试信息,具体实现...
https://www.fun123.cn/reference/iot/MQTT.html 

App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网

...,表示操作不会超时。如果发生超时,操作将继续后台运行,直到完成。超时用于操作过程中进行阻塞。 MaxInflight - 最大排队数量 最大排队数量指定我们可以未收到确认的情况下发送的消息数量。默认值为 10。高...
https://www.tsingfun.com/it/tech/969.html 

淘宝网采用什么技术架构来实现网站高负载的 - 更多技术 - 清泛网 - 专注C/C...

...不同的salve节点上面,系统终于又恢复了正常,开始正常运行了。但是好景还是不长,有一天我们发现master这哥们撑不住了,它负载老高了,汗 流浃背,随时都有翘掉的风险,这个时候就需要咱们垂直分区啦(也就是所谓的分库)...
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使用App Inventor 2 控制物联网设备/低功耗蓝牙设备(BLE) · App Inventor 2 中文网

...换进行了优化,这种数据交换通常使用硬币大小的电池运行数月的传感器中出现。 [3]。 鉴于这种功效差异,App Inventor 用户无法使用经典蓝牙将其应用程序与 IoT 设备连接。 因此,我们开发蓝牙 LE 组件是为了解决物联网连接...
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Why does GCC generate 15-20% faster code if I optimize for size instead of speed?

I first noticed in 2009 that GCC (at least on my projects and on my machines) have the tendency to generate noticeably faster code if I optimize for size ( -Os ) instead of speed ( -O2 or -O3 ), and I have been wondering ever since why. ...