Vector Sum

With the explosion of information, micro-blogging website Twitter was born. It is no exaggeration to describe Twitter's growth with the word "born". Twitter has grown from 0 to 66,000 since May 2006, when the number of Twitter users rose to 1.5 in December 2007. Another year, December 2008, Twitter's number of users reached 5 million. [1] The success of Twitter is a prerequisite for the ability to provide services to tens of millions of users at the same time and to deliver services faster. [2,3,4 ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host Technology Hall Actual example below we give a practical example. If you don't quite understand what the following examples are doing, just think we can use the Octave program to solve the eigenvalue problem. First, use the appropriate editor to make the following Octave script. (with a semicolon at the end of a line, you can eliminate unwanted results ...)

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall PageRank calculation is to find the inherent vector which belongs to the maximum characteristic value of this passage probability row ( Excellent intrinsic vector). This is because, when the linear transformation system t→∞ asymptotically, we can according to the transformation of the ranks of the "absolute value of the greatest value" and "belong to it ...

First, eigenvalue decomposition 1, matrix multiplication before introducing the geometrical meaning of eigenvalue and eigenvector, the geometric meaning of matrix multiplication is introduced. Matrix multiplication corresponds to a transformation, a new vector that transforms any vector into another direction or length. In this process, the original vector mainly occurs in rotation and expansion of the change. If the matrix only has a scaling transformation for some vectors and does not produce a rotational effect, then these vectors are called the eigenvector of the matrix, and the scale of the scaling is the characteristic value. For example:, its corresponding linear transformation is the following form: Because the matrix M is symmetrical ...

Some tasks are more complicated to code directly. We can't handle all the nuances and simple coding. Therefore, machine learning is necessary. Instead, we provide a large amount of data to machine learning algorithms, allowing the algorithm to continuously explore the data and build models to solve the problem.

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host Technology Hall last time we discussed the vector space model of information retrieval, and today we discuss the design of the weight of words. 　　Mainly from the traditional method of weight calculation method elaborated. Under normal circumstances for the weight of the design, the first thought to use is the word frequency. In a Web page document, if a word appears more frequently, then ...

PageRank algorithm PageRank algorithm is Google once Shong "leaning against the Sky Sword", The algorithm by Larry Page and http://www.aliyun.com/zixun/aggregation/16959.html "> Sergey Brin invented at Stanford University, the paper download: The PageRank citation ranking:bringing order to the ...

There are many articles on machine learning algorithms that detail the related algorithms, it is still very difficult to make the most appropriate choices.

The scalability of the system is the main reason for promoting the development of NoSQL movement, including distributed system coordination, failover, resource management and many other features. That makes NoSQL sound like a big basket that can be stuffed with anything. Although the NoSQL movement does not bring fundamental technological changes to distributed data processing, it still leads to extensive research and practice on protocols and algorithms. It is through these attempts to gradually summarize some effective database construction methods. In this article, I will focus on the NoSQL database distributed special ...

The scalability of the system is the main reason for promoting the development of NoSQL movement, including distributed system coordination, failover, resource management and many other features. That makes NoSQL sound like a big basket that can be stuffed with anything. Although the NoSQL movement does not bring fundamental technological changes to distributed data processing, it still leads to extensive research and practice on protocols and algorithms. It is through these attempts to gradually summarize some effective database construction methods. In this article, I will focus on the distributed features of the NoSQL database ...