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Deep Learning（深度学习）学习笔记整理系列之（三） - 大数据 & AI - 清泛...
...多层）、输出层组成的多层网络，只有相邻层节点之间有连接，同一层以及跨层节点之间相互无连接，每一层可以看作是一个logistic regression模型；这种分层结构，是比较接近人类大脑的结构的。
而为了克服神经网络训...
通过 ulimit 改善系统性能 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...rver 发出请求，那么此时 server 就会需要创建大量的 socket 连接。但在一个系统当中，往往需要限制单个 server 程序所能使用的最大 socket 数，以供其他的 server 程序所使用。那么我们如何来做到这一点呢？答案是我们可以通过 ulimi...
How to send password securely over HTTP?
... Doesn't stop man in the middle or impersonation attacks. E.g. through wifi. Seems like this will just give a false sense of security, IMO.
– Tom Hawtin - tackline
Oct 17 '09 at 18:55
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How to install trusted CA certificate on Android device?
...ndroid 2.1 and 2.2 allow you to import certificates, but only for use with WiFi and VPN. There is no user interface for updating the list of trusted root certificates, but there is discussion about adding that feature. It’s unclear whether there is a reliable workaround for manually updating and r...
Going from a framework to no-framework [closed]
...nd HTML5 features:
HTTP Strict Transport Security (Helps protect against WiFi exploits.)
X-Frame-Options (Restrict embedding of your pages. Good against phishing.)
HTML5 IFrame Sandbox Attribute (Sandbox 3rd-party ads/badges/videos. Already in WebKit. Likely to be at least partially implemented in...
What is “above-the-fold content” in Google Pagespeed?
...ile data networks have different performance characteristics than wired or wifi so you need to do different things to optimize for them.
Above-the-fold (ATF) is simply the first screen's worth--anything you don't need to scroll to see. Obviously, this varies depending on the device and its orientat...
Can you autoplay HTML5 videos on the iPad?
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What they should do is allow autoplay when on wifi, and either have manual play or prompt the user that the video wants to autoplay when on a mobile network.
– Ric
Feb 18 '14 at 10:49
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Android应用开发性能优化完全分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...隔。
后台任务要尽可能少的唤醒CPU，譬如IM通信的长连接心跳时间间隔、一些应用的后台定时唤醒时间间隔等要设计合理。
特殊耗电业务情况可以进行弹窗等友好的交互设计提醒用户该操作会耗用过多电量。
可以看...
淘宝应对双\"11\"的技术架构分析 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...完善的地方。一个典型的例子莫过于各个分层之间使用短连接模式的HTTP协议进行通信。这样的策略直接导致在流量高峰期单机的TCP连接数非常高。所以说，一个良好的架构固然能够在很大程度上降低开发和维护的成本，但它自...
获取文件系统映像及恢复删除的数据（FAT文件系统格式描述） - C/C++ - 清泛...
...件占用的所有簇的号，这些簇号按照文件数据存储的顺序连接起来，就构成了一个链表。例如，一个文件1.txt，其大小是1200字节，每个簇的大小是512字节，则这个文件就要占用三个簇。则FAT表就要依次存储这个簇的号(id)，这样...