How to use large data training risk control mathematical model has always been the challenge of PayPal in the detection of fraud transactions. PayPal has experienced four stages in the training of risk control model: Decision Tree: Early PayPal uses a simple decision tree model, mainly due to the small amount of data in the early model training, the result of the decision tree model is easy to explain. Logistic regression: When PayPal's business is becoming more and more complex, the split-control model is becoming more and more complex, and using logistic regression can easily handle larger data volumes and more features; and PayPal's line ...
Absrtact: The first time we talked about HTML5 to change the world is probably because of Steve Jobs, who insists on not being compatible with Flash on iOS, which takes a lot of courage in the era of Adobe's dominance of multimedia development. So many years have passed, and while everyone is talking about HTML5, the first time we talk about HTML5 to change the world is probably because of Steve Jobs, who insists on not being compatible with Flash on iOS, which takes a lot of courage in the era of Adobe's dominance of multimedia development. So many years have passed, although everyone is talking about htm ...
Over the past two years, the Hadoop community has made a lot of improvements to mapreduce, but the key improvements have been in the code layer, http://www.aliyun.com/zixun/aggregation/13383.html "> Spark, as a substitute for MapReduce, has developed very quickly, with more than 100 contributors from 25 countries, and the community is very active and may replace MapReduce in the future. The high latency of mapreduce has become ha ...
The same essential tool in general software development is the code editor. Traditional code editors are generally installed in the form of software installation package to the computer, the code is compiled and saved to the server through ftp or svn and other tools (of course, such as NET development in Microsoft Visual Studio such a powerful integration Tools say another.). In the actual project development in such a way is also very convenient. However, with the rise of various cloud services, ...
In Google data centers there are large numbers of data to be processed, such as a lot of Web pages crawled by web crawlers (WebCrawler). Since many of these data are PB levels, the process has to be as parallel as possible, and Google has introduced the MapReduce distributed processing framework to address this problem. The technology overview MapReduce itself originates from functional languages, mainly through "map" and "Reduce" ...
Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest Cloud host Technology Hall This is a popular article about search engine Sequencing Basics TF Framework, It is not some of the occasional generalities or even out of context, but a combination of search engine theory and the actual knowledge of the many examples that you have observed. Although it may be relatively difficult to understand, but believe me, these use ...
In the SIP project design process, for its large log in the early consideration of the use of task decomposition of multithreading mode to analyze statistics, in the previous blog mentioned that part of the design, but because the content of the statistics is still very simple, Therefore, the use of memcache as a counter combined with MySQL completed http://www.aliyun.com/zixun/aggregation/38609.html "> Access control and statistical work." But the future, for the massive day ...
The intermediary transaction SEO diagnoses Taobao guest Cloud host technology Hall on-line spreads for a long time the information "the SEO HTML tag weight", here makes a backup. HTML tag Weight score arrangement Internal link text: 10 title title:10 domain Name: 7 minute H1,H2 title: 5 points per paragraph: 5 path or filename: 4 points similarity (keyword accumulation): 4 points in the beginning of each sentence: 1.5 points bold or italic: 1 Split text usage ...
Overview How to deal with high concurrency, large traffic? How to ensure data security and database throughput? How do I make data table changes under massive data? Doubanfs and DOUBANDB characteristics and technology implementation? During the QConBeijing2009, the Infoq Chinese station was fortunate enough to interview Hong Qiangning and discuss related topics. Personal Profile Hong Qiangning, graduated from Tsinghua University in 2002, is currently the chief architect of Beijing Watercress Interactive Technology Co., Ltd. Hong Qiangning and his technical team are committed to using technology to improve people's culture and quality of life ...
Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall a blink of an eye time for the website has been nearly 2 years, all the way to full of hardships. Now the website finally began to slowly on the right track, in A5 and friends to share a brief moment of their own experience. I worked with a partner in a top IT company, and I should say it was a job that others envied, but ...
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