大约有 9,000 项符合查询结果(耗时:0.0129秒) [XML]

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记一次MongoDB性能问题 - 数据 & AI - 清泛网 - 专注C/C++及内核技术

...status: 0) 我一时判断不出问题所在,想想先在PHP脚本里加Timeout的值应付一下: <?php MongoCursor::$timeout = -1; ?> 可惜这样并没有解决问题,错误反倒变着花样的出现了: max number of retries exhausted, couldn&rsquo;t send query, couldn&rs...
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JavaScript OOP in NodeJS: how?

... This is the most helpful answer with regards to the core NodeJS environment. – Philzen Jan 26 '15 at 5:50 1 ...
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海量数据相似度计算之simhash短文本查找 - 数据 & AI - 清泛网 - 专注C/C++及内核技术

...据相似度计算之simhash和海明距离》 介绍了simhash的原理,家应该感觉到了算法的魅力。但是随着业务的增长 simh 在前一篇文章 《海量数据相似度计算之simhash和海明距离》 介绍了simhash的原理,家应该感觉到了算法的魅力。...
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构建高并发高可用的电商平台架构实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术

... 2. 并行与分布式计算 1) 任务切分、分而治之(MR) 在规模的数据中,数据存在一定的局部性的特征,利用局部性的原理将海量数据计算的问题分而治之。 MR模型是无共享的架构,数据集分布至各个节点。处理时,每个节...
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Including a .js file within a .js file [duplicate]

...liably in IE6 (and TBH didn't care enough to put much effort into it). The core of my code is: if (horus.script.broken) { document.writeln('&lt;script type="text/javascript" src="'+script+'"&gt;&lt;/script&gt;'); horus.script.loaded(script); } else { var s=document.createElement('scr...
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What is the difference between JavaScript and ECMAScript?

...Script is the most popular implementation of the ECMAScript Standard. The core features of Javascript are based on the ECMAScript standard,  but Javascript also has other additional features that are not in the ECMA specifications/standard. ActionScript and JScript are other l...
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手把手教你如何加入主流DSP广告联盟 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...为没有设置联盟;联盟设置后可能由于服务器缓存机制,概几十分钟生效): 3、京东联盟(http://media.jd.com/)需要审核(1天),按最终成交提成。 京东联盟设置方式和淘宝类似,这里不再进行赘述。它支持的方式有...
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How does one unit test routes with Express?

...s is to maintain a lot of separation between the request handlers and your core logic. Thus, your application logic should be in separate modules that can be required and unit tested, and have minimal dependence on the Express Request and Response classes as such. Then in the request handlers you...
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如何选择机器学习算法 - 数据 & AI - 清泛网 - 专注IT技能提升

... 当然,如果你真心在乎准确率,最好的途径就是测试一堆各式各样的算法(同时确保在每个算法上也测试不同的参数),最后选择在交叉验证中表现最好的。jmp0xf 译自Edwin Chen How do you know what machine learning algorithm to choose for ...
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如何选择机器学习算法 - 数据 & AI - 清泛网 - 专注IT技能提升

... 当然,如果你真心在乎准确率,最好的途径就是测试一堆各式各样的算法(同时确保在每个算法上也测试不同的参数),最后选择在交叉验证中表现最好的。jmp0xf 译自Edwin Chen How do you know what machine learning algorithm to choose for ...