Pagerank

It is Google ranking algorithm (ranking formula) of a part, is used to identify the web using Google level/importance of a kind of method, is used to measure the Google of a web site is good or not only standard. In such as Title logo and knead until all other factors that mark after Google through using PageRank to adjust the results, so that those who are more "rank/importance" web pages in search results another website ranking promoted, so as to improve the search results correlation and quality.

concept

Using PageRank (web Page level), September 2001 was awarded the United States patent, patent is Google co-founder benchwarmer brief. Therefore, using PageRank in brief, but that does not mean web brief, namely the rating method based on brief for names. It is Google ranking algorithm (ranking formula) of a part, is used to identify the web using Google level/importance of a kind of method, is used to measure the Google the stand or fall of a web site is one of the important criteria. In such as Title logo and knead until all other factors that mark after Google through using PageRank to adjust the results, so that those who are more "rank/importance" web pages in search results another website ranking promoted, so as to improve the search results correlation and quality. Its level from 1 to 10 levels, 10 levels for full marks. The higher the PR value to illustrate the web more popular (the more important). For example: a PR value is 1 site shows that this website is not too has the popular degrees and PR value for 7 to 10 indicates that this website is very popular (or extremely important). General PR value up to four, even a good web sites. Google put their website PR value set to 10, this shows that Google this site is very popular, also can say to this website is very important.

Google using PageRank according to the website of the external links and internal links the quantity and quality of both measure the value of a site. Using PageRank behind the concept is, each to page links are on this page, the poll by link, the more means by other web vote more. This is the so-called "link popularity" - measure how many people would like to their web sites and your website link up with. Using PageRank this concept quotations from academic papers were quoted in the frequency - that is, being quoted, the more general judge this essay authority is higher. Google has a automation methods to calculate the vote. Google using PageRank score from 0 to 10; Using PageRank for 10 say best, but this is rare, similar to the Richter scale (Richter scale), using PageRank level is not a linear, but according to an index scale. This is a peculiar mathematical terms, mean PageRank4 than PageRank3 good level 1 - and may good six to seven times. Therefore, a PageRank5 web pages and the gap between PageRank8 pages than you might think.

Using PageRank higher page ranking tend to be lower than using PageRank page high, while this leads to the people to link the possessed. In the whole community, people are busy SEO race, exchange and even the sales link, it is in the past few years the focus of attention that Google revised his system, and began to give up some types of links. For example, is widely accepted a regulation, from lack of content "link farm" (link factory) web link will not provide page using PageRank, from using PageRank higher pages get links but not content related (for instance, a popular comic books web links to a forklift specs page) and would not provide page using PageRank. Google choose reduced to update frequency of using PageRank so as not to encourage people to constantly on the monitoring.

Google using PageRank general year update four times, so just online new website impossible to obtain the PR value. Your website is likely to see inside for quite a long time in PR value change, especially some new website. PR value temporarily no, this is not what bad things, wait.

For your web site for external links is a good thing, but ignores other SEO field of work and undertake urgent link building is a waste of time, must always keep a whole thinking and remember the following:

· Google's ranking algorithm and not totally based on external links

· high using PageRank doesn't guarantee Google high ranking

· using PageRank value updated more slow, see today using PageRank value may be three months before the values

So we don't encourage deliberately to pursue using PageRank, because the decision ranking factors could have hundreds of. Nonetheless, using PageRank or a used to learn on your web page to Google how evaluation reasonably good instructions, suggest using PageRank web designers should fully understand the Google judgment website quality, the importance of considering from before the design are given later updating your website using PageRank enough analysis, to good use. We will using PageRank is regarded as a kind of hobby and not a religion.

Using pagerank principle

Based on by more than 50,000 thousand variables and 20 million words of equations is calculated, the importance of using PageRank can for web make an objective evaluation. Using PageRank not calculated the number of direct link, but will A page from the web B links explain pointing in the grounds for web page A B has cast A vote. So, using PageRank will on the page number of votes received B to assess the importance of this page.

In addition, using PageRank will assess the importance of every vote web page, because some of the vote is thought to have higher value, so, it links page can obtain higher value. Important web obtained using PageRank (web page ranking) high, thus displayed in search results to the top. Google technologies used online feedback comprehensive information to determine the importance of a page. The search results without manual intervention or manipulation, which is why Google will become a popular with the user's trust, unaffected by paying ranking influence and fair and objective information source.

In fact simply be democratic decision. For example, if we want to find the cathedra, hand, there were one hundred people saying that he himself is kai-fu lee. So who is true? Maybe there are several really, but even so who is everybody really wants to find? : -) if everyone said just from Google leaving that is true, then he is really.

On the Internet, if a web page by many other website links, explains it was generally acknowledged and trusted, then its ranking is high. This is the core idea of brief Rank. Of course Google's brief Rank algorithm actually is much more complicated. For example, from different web links to treat different, itself web rank high links more reliable, so give these links to larger weights. Brief Rank considers the factors, but now the problem again come, calculation of the search results Page ranking process needs to use the web Page itself, it won't be the ranking came first, the chicken or the egg came first question?

Google's two founder Larry Page (benchwarmer brief) and sergei Sergey Brin) (Sergey the problem becomes a two-dimensional matrix multiplication problem, and using iterative method solved the problem. First they assume that all web rankings are the same, and according to the initial value calculate pages first iteration rankings, then according to the first iteration ranking calculate the second rank. They both theoretically proved no matter how the initial value selection, this algorithm guarantees the estimate of the web page ranking can converge to their true value. What is worth mentioning, this algorithm is completely free of any human intervention.

Theoretical problem is solved, and meets the actual problem. Because the number of Internet web page is great, mentioned above two dimensional matrix theoretically page number of multiple elements. Sq. If we assume a billion web pages, so this matrix has YiBaiYiYiGe elements. Such large matrix multiplication, computation is very big. Larry and sergei both used sparse matrix calculation skill, greatly simplifies the calculation, and realizing this page ranking algorithm. Today the algorithm of Google engineers transplanted into parallel computer, further reduce calculation time.the update website cycle short many than before.

Page ranking brillant place in it the whole Internet as an overall treatment. It unconsciously meets the system view. Compared with previous information retrieval every web mostly treat as independent individuals, many people had only pay attention to a web page content and query correlation, ignoring the relationship between web pages.

Today, Google search engines than initially complex, perfecting a lot. But page ranking in Google all algorithm still is of vital importance. In the academic circle, this algorithm was acknowledged to be the biggest contribution literature Retrieval in one, and by many universities introduced Information Retrieval of tutorial.

How to improve your web page of PR value

Website external links of quantity and quality

In computing website ranking, using Pagerank will website of the external links number into consideration. Can't say a web site of the external links more its PR value is higher, if so, a web site as far as possible to obtain the most external links with respect to OK, have this idea is wrong. Google to a site on the external links number value degree doesn't mean you can therefore not strategies to establish a connection with any website. This is because Google is not simply by calculating websites of the external links to determine the number of rank. Google using Pagerank system not only consider a web site of the external links quantity, also can consider its quality. The problem seemed to have complex. Let us first to explain what is damping factor (damping factor). Damping factor is that when you vote or links to another site obtains the actual PR fraud-probability score. Damping factor is generally 0.85. Of course than your website's actual PR value, it would appear insignificant.

Now let's look at the PR value of calculation formula: PR (A) = (1 - d) + d (PR (t1) / C (t1) +... + PR (tn) / C (tn)) formula explanation: including PR (A) says the external links from A site t1, according to your website using Pagerank system to increase PR score, PR (t1) said the external links the site itself, PR score, C (t1) represents the external links sites have external links quantity. We should remember that a web vote value only the site of PR score 0.85,

Does that mean that for a website is concerned, it has the high quality and high score PR website of the external links the greater the number is better? Wrong, because - Google using Pagerank system not only consider a web site of the external links quality, also can consider its quantity. For example, to a certain PR value website for X, Y, if your site is its only one external links, so Google believe website X your website to be Y as one of its finest external links, thus will get your site Y more score. But if the website X have 49 external links, so Google believe website X just your website to be seen as it first 50 good website. Therefore your external links site of the external links, more you can get PR score lower, they will instead is inversely proportional to the relationship.

Say it to because - general case, a PR score greater than or equal to six of the external links site, can significantly raise your PR fraud-probability score. But if the external links sites have 100 other external links, that you can get almost the PR score zero. Likewise, if a external links site is only 2 PR value, but you are the only one external links, so what you get PR value is more than the PR value for 6, external links number of 100 web sites.

And this 0.85 the weights of average assigned to each of the links to external websites.

Google on your website to grab the page number

Google on your website to grab the page number, number, the more using Pagerank value is higher. But usually Google will not active grab your all your pages, especially website in with a "?" The dynamic links, Google not active, that shall we initiative, the most stupid method is to take the website all pages are submitted to Google, but I don't think who can really doing so, but few words can try page. A better way is to make a static Html pages, are usually referred to as "the site map" or "site navigation", it contains you want to add all the url, then put the static page submitted to Google.

Web sites are three world famous website DMOZ, Yahoo and Google's Looksmart included as is known to all, using Pagerank system for those gateway web directory, Yahoo and Looksmart like DMOZ is particularly valued. Especially for DMOZ. A web site DMOZ links on Google using Pagerank? For, like a piece of gold as precious. If your site for the ODP included, then can be used to enhance your page rank. To the ODP submit your site and indexed, for it is not really a tickler, just want to spend more time. Just make sure your site provides good content, then on the ODP directory right click "add site," according to clew step by step to OK. At least to ensure that you INDEX PAGE (INDEX) was collected in brief. So, if your website content involves completely different chunks of content, you can put each content pages separately to the ODP submitted - but please remember "more haste, less speed". Wait until after the directory updates for Google, you can see your PR value what would have changed. If your site for Yahoo and Looksmart collected, then your PR value will be significantly increased. If your site is businesslike or almost complete dispute businesslike content, then you can go through zeall. Com make your website for the famous web directory Looksmart collected. Looksmart is also obtained from Zeal web directory non-commercial search list.

Google PR value of updating cycle is how long? Normally PR value updated cycle is 2.5 ~ 3 months!