Google – PageRank
What do you know about PageRank?
The PageRank, or based on the PageRank algorithm, developed by the founders of the Google search engine. Larry Page and Sergey Brin, then still students at Stanford University, had tried to develop a new method for assessing the relevance of individual Web pages.
The PageRank Algorhitmus rated websites because of the number and the quality and strength of inbound links.
This method is based the theory that the relevance of a page increases when other sites link to this page. The greater the weight of the respective links, and the larger the number, the higher is the relevance or the PageRank of the linked page.
To put it simply defines the PageRank, the likelihood that a website is found on the internet …
Google – PageRank algorithm
Since the exact mathematical representation or explanation of the algorithm would be too extensive, is here only once the principle of the formula are illustrated briefly. According to the PageRank algorithm has any website that has a weight, called PageRank. This is expressed in a scale of 1-10, with 10 being the highest value and represents the highest weighting.
The weight, which is the PageRank of a page, the higher the more pages, with as its own high PageRank, link to the page. A Web page is replaced by a link on another site some of the weight of this side, that part of the PR. How big is this part is clearly defined in the formula. To illustrate this graphically, the following are simple examples:
This gives your site a PR of 3, should in theory refer 101 pages with a PR of 2 or about 3 pages with a PR of 4 to your page. If you want to achieve a PageRank of 5, you need 3055 PR 2 links or 101 links PR 4. For a PageRank of 3, however, goes even a PR 5 link and a PR of 5 has a link goes from a Web page that has a PageRank of 7.
The higher the PageRank of the linked website, the higher also the PR of the linked page. The increase in PageRank extends not uniform but rather ‘erratic’. To get a step in the PR scale, are, simply put, more and stronger links necessity.
The PageRank of a website you can find using the Google Toolbar. It shows the exact PR of each page on which one is currently located.
The displayed PageRank is updated every three months in a so-called PR update. It may happen that your website even though as many other pages point to this, has no PR. This is only indirectly so. The external links or the effect of the links goes after a very short time in the ranking of your website with a. The PR update is merely an update of the `visible ‘PageRank …
Google – Alternatives
The PageRank algorithm, ie the number and strength of inbound links a web page will always remain an important factor for assessing the relevance and importance of a website, as are one of the most important characteristics of the World Wide Web links. The PageRank, there is no direct reference to the actual quality of a website. Since this crucial for the ultimate relevance, is constantly working on alternative assessment methods, some of which will be briefly explained here …
The Hilltop algorithm: Using the Hilltop algorithm to sort websites because of their relevance to specific search words or evaluated. First so-called experts or are intended for a specific topic or a particular search term. These are pages that refer to many independent websites on a particular topic. Then be identified called authority sites. Authority pages are web pages that refer to the pages at least two experts. The Hilltop algorithm was developed in Toronto. 2003 Google purchased the patent on the algorithm. Set by Google authority site signifies your agreement among other things, that their entries are in the results of relevant search words in the first place and besides the usual page description further information, eg the links of the main bases, included.
Hubs and Authorities: This method, also known as ‘HITS‘ known, the value of a page due to their hub or authority status. The lifting capacities assessed the number and quality of the outgoing links of a page, the authority of a website is defined by their external links. By this, among others, Jon Kleinberg developed algorithm generally important nodes are defined within the link structure of the Internet.
Rank Trust: The Trust Rank algorithm, Google also patented, was developed primarily to detect spam pages. For this, first a few of authority or independent experts and trusted sites are defined. One example is Wikipedia or DMOZ is called. Thereafter, all outgoing links are followed, the Trust rank of authority or expert pages, similar to the distribution of PageRank, on the linked pages and their external links is transmitted. Since spam pages are usually barely linked, then you can also filter out such relatively simple and correspondingly devalue.
In addition, there are many other approaches to improve the search engine results or to filter irrelevant results. Generally, in all proceedings of the content, so the actual quality of a website, put in the foreground. Since it is very difficult due to various factors and ever new manipulation techniques to perform this only automated, many approaches, similar to the Trust Rank, from manually audited websites or fixed points.
Editorially managed websites, directories, or rating systems such as social bookmarking to gain in more and more important, and complement the assessment process of the search engines …