Source: e800.com.cn
PageRank revealed PageRank's principle Similar to the reference mechanism in scientific papers: Who is more quoted, who is authority. Many words: Zhang San mentioned Zhang Manyu in the conversation, Li Si also mentioned Zhang Manyu in the conversation, Wang 5 also mentioned Zhang Manyu in the conversation, which means that Zhang Manyu must be a very famous person. On the Internet, the link is equivalent to "reference", link A in the B web page, which is equivalent to mentioning A when it is talking, if it is linked in C, D, E, and F, then the A web page is The most important thing, the PageRank value of a web page is also the highest. How to calculate the PageRank value has a simple formula: where: the coefficient is a number greater than 0, less than 1. Generally set to 0.85. Webpage 1, page 2 to the web page N represents all the links to a web page. It can be seen from the above formulas: 1, the more the link pointing to A, the higher the level of A. That is, the level of A and the number of web pages that point to A are proportional. In the formula, the larger N, the higher the level of A. 2, the link pointing to a web page, the higher the web page, the higher the level. That is, the level of A and the web page pointing to A. It is proportional to the formula. The higher the webpage n level, the higher the level of A. 3, the link pointing to a web page, the number thereof, the more The lower the level of A. That is, the level of A and the web page of the page pointing A is a counter-ratio. In the formula, the number of webpage n links, the lower the level of A. Each webpage has a PageRank value, which forms a huge equation group that solves this equation to get the PageRank value of each web page. There are hundreds of billions of web pages on the Internet. The equation has hundreds of billions of unknown numbers. Although this equation is gone, it is too complex, it is too complex, it is impossible to put all this page together to solve. Friends who are interested in specific calculation methods can refer to some of the books of numerical calculations. In summary, PageRank effectively utilizes the characteristics of the huge link constructed by the Internet. From the link to the web page B, the GOOGLE founder's words is, the page A supports the page B support voting, Google determines the importance of the page based on this voting, but Google is in addition to the number of votes (number of links). An analysis is also analyzed for the voter (page). The value of the ticket voted by the "Important" high, because this voting page will be understood as "important items". From Sina, Yahoo, Microsoft's homepage has three links to my webpage, may be more than I have to find thirty links in other websites. If someone doesn't understand this principle, I will think about it coming to say that there is a speech: three people tiger. If there are three people say that there is a tiger on the Beijing street, many people will think there is a tiger. If these three people are national leaders, then everyone will think that there is a tiger on the Beijing street. Every page will have a PageRank value. If you want to know how much your website's web pageRank value is to download a Google's free toolbar (http://toolbar.google.com/), whenever you open A web page can be very clear to see the PageRank value of this page. Of course this value is a probably number. According to the person in charge of Google Technical, Google has other hundreds of factors to participate in sorting in addition to the importance of PageRank's metrics. This is also true of other search engines, it is impossible to perform the search results in a certain rule.
