Alpha Data Type

Since the end of September, the United States found the first Ebola virus infection, the panic quickly transmitted to the U.S. capital market, with the infection of the disease and the evolution of the number of infected people, the stock market related stocks have set off a climax, followed by a different degree of decline, staged a pulse-type speculation market. A new stir-fry has emerged, with protective clothing manufacturers, pharmaceutical companies, and even tobacco companies, a common name for this particular period of seemingly unrelated stocks: the Ebola concept unit. Through the process of carding the spread of the virus and the capital market hype stage, the whole hype road ...

Editor's note: Data Center 2013: Hardware refactoring and Software definition report has a big impact. We have been paying close attention to the launch of the Data Center 2014 technical Report. In a communication with the author of the report, Zhang Guangbin, a senior expert in the data center, who is currently in business, he says it will take some time to launch. Fortunately, today's big number nets, Zhangguangbin just issued a good fifth chapter, mainly introduces Facebook's data center practice, the establishment of Open Computing Project (OCP) and its main work results. Special share. The following is the text: confidentiality is the data ...

Big data is here to help you define, http://www.aliyun.com/zixun/aggregation/18826.html, "> Redefine, know, or build a better, more flexible, stronger enterprise." When enough data is collected, the things you can do are beyond your imagination. The question is, what do you do with the data once it's collected? 　　You must have a data visualization tool to help you succeed. This does not mean that you have to pay a huge cost in the enterprise lifecycle ...

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The Big data field of the 2014, Apache Spark (hereinafter referred to as Spark) is undoubtedly the most attention. Spark, from the hand of the family of Berkeley Amplab, at present by the commercial company Databricks escort. Spark has become one of ASF's most active projects since March 2014, and has received extensive support in the industry-the spark 1.2 release in December 2014 contains more than 1000 contributor contributions from 172-bit TLP ...

The primary load in the data center is the server. 　　Server development today, adapt to a variety of different functions, different environments of the server constantly appear, classification standards are also diverse. The primary load for the server classification data center is the server. 　　Server development today, adapt to a variety of different functions, different environments of the server constantly appear, classification standards are also diverse. 1. Classification by application level as entry-level server, workgroup level server, departmental server and Enterprise Server four (1) entry-level ...

In this lesson, we want to learn how to increase the intelligent processing capacity of the Web page. Basic functions Welcome to the third and final lesson of this tutorial. If you've learned the first and second lessons, you've mastered the basics of installing and programming MySQL and PHP. Here are some of the other functions of PHP that might be useful to you and make your development process simpler. 　　First, let's look at the document. You should know some basic concepts of the header file, right? The header file is an external file whose contents are included in the main program. ...

Clustering is to divide similar objects into different groups or more subsets by static classification. Members in the same subset have similar attributes. Cluster analysis can be regarded as an unsupervised learning technology.

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"Wang classmate, you now focus on only 20%, pay attention to the classroom, listen carefully." 　　May 28, 2013, in the classroom of Guanlan Middle School in Shenzhen, students wear a hair band to listen carefully, the teacher stood on the podium clearly know each student's focus and dispersion. Will transfer? Mind control? Reading minds? 　　No, the mystery is on the hair belt worn on the student's head. The chip on the Ribbon collects the students ' brain waves and sends them to the PC to receive them, and then the system takes the brain wave information and displays it in the form of data. Teacher feedback data from the computer, observing students ...