Analysis of four factors of search engine algorithm

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Search engine algorithm is confidential, and is said to be adjusted every day, no one knows. But Ethan believes that search engine algorithms derive from two methodologies: program inference and user judgment, and program inference is divided into two dimensions: relevance and importance, and user judgments are relative and importance multiplied by the previous factor. Keyword correlation is determined by the density and distribution of keywords in a Web page text field. Importance is also called weight, the weight of a Web page is determined by the lineage and content quality of the page. From this, Ethan summed up the search engine algorithm four aspects: keyword relevance, Web lineage, Web content quality, user judgments, it may be called search engine algorithm four factors. Everyone from these four aspects of thinking, often can be widely recognized SEO operation to find the theoretical basis, cultivate their own seo thinking. With the SEO thinking, can break through the dogma of the operation of the rules, in the SEO actual combat flexibility.

Rankings are not for Web sites, but for Web pages. When users search for a keyword, the search engine from the following four aspects of the analysis is included in the page, calculated a total score, the highest score, ranked in the natural ranking first.

Keywords relevance

Web page Text field is a concept created by Ethan, want to explain the meaning of the search engine in determining the relevance between the keywords and Web pages, not only to study the text inside the page, but also look at the text outside the page, mainly including the reverse link anchor text text, reverse link page theme text, domain name theme text, All of these words form the text field of the page. The so-called theme text, is the search engine for each domain name and each page to give some text, these words reflect the domain name or the theme of this page. We all know that there are keywords and description in the META tag, so you can imagine that the search engine added some meta tags to the page, including the topic text of the domain name, the anchor text of the reverse link 1, the theme text of the page with the reverse link 1. Reverse link 1 The subject text of the page's domain name, the anchor text of the reverse link 2, the theme text of the page on the Reverse link 2, the subject text of the page on the reverse link 2, and so on. These meta tags are much more important than keywords and description, and some are even higher than the visible text on the page. With the concept of Web page text field, we can understand many SEO operations such as outside chain construction.

Attention search engine will be based on the user's search intentions, the user search keywords translated into the internal actual query keywords. In most cases the two are the same, but sometimes they are different. For example, know the user's IP from which region, then the relevant pages in that area will be first shown, a kind of user search added to the effect of regional text. For example, the search engine will also list the search results of synonyms.

The relevance of a keyword and a Web page is determined by the density and distribution of keywords in the text field, the more relevant, the higher the ranking.

Ii. Web Descent

Web Descent is a concept created by Ethan, to illustrate that, in the search engine view, a Web page is born with a weight, this weight from the URL. Search engine will analyze a Web page URL, get two important information, the first is the domain name of the case, the domain name is the right to heavy, will be directly passed to this page; the second is the case of reverse link, each reverse link on the page is also entitled to Heavy, will also be passed to this page We often encounter the PR value, mainly reflected by the reverse link to pass the weight.

Note that the weight of the domain name is not equal to the weight of the home page, the search engine will be based on the weight of the homepage, the overall situation of the site (such as the stability and asymptotic of the site, there are many directional anchor text, etc.), other factors (such as domain name life, etc.)

The better the pedigree of a webpage, the higher the weight, the better the rank.

Third, the quality of Web page content

In terms of importance, Web lineage is a transitive factor, simply imported from outside, and the quality of Web content is a structural factor that is determined by the various qualities associated with the page itself. Although the search engine is not smart enough, but there are many means, the most important is the content of the original and how the content of the freshness, especially the content of originality. There are also such as whether the page has directional anchor text and reverse link anchor text is directed, the search engine that if a page seriously write directional anchor text or its reverse link anchor text for orientation, indicating that the content of this Web page is high quality. Details, such as a picture on the page will be better, the appropriate use of the list label in the page will be better, the beginning of the paragraph appropriate "first", "second" this word will be better, and so on.

The better the content quality of a webpage, the higher the weight, the better the rank.

Iv. User Judgment

Relevance and weight, data sources are not from the user's judgment, the search engine is very clear, the most important thing is that users feel good. Although this aspect obtains the data source to be extremely difficult, but the search engine still has some methods, for instance the search jumps out rate, for example Baidu statistics and the Google analysis, for example social network data, this is the future search engine algorithm development direction, to the rank role will be bigger and larger. Ethan believes that search engines are going to lose all their cost in order to obtain data sources that users judge.

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