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SEO link principle

Date：2012-11-02 Source: Shangpin China Type: website encyclopedia
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SEO link principle

Before the birth of Google, traditional search engines mainly relied on keywords in page content to match search terms for ranking. The shortcoming of this nomination method now seems obvious, that is, it is easy to be deliberately manipulated. Black hat SEO can improve the ranking by stacking keywords on the page or adding popular keywords unrelated to the theme, which will greatly reduce the quality of search engine ranking results. Now search engines use link analysis technology to reduce garbage and improve user experience. High end website construction Service provider Shangpin China This paper briefly discusses the application principle of links in search engine ranking.
Including the link factor in the ranking will not only help reduce garbage and improve the relevance of results, but also enable documents that cannot be ranked by traditional keyword matching to be processed. For example, images and video files cannot be matched with keywords, but may have external links. Through the link information, search engines can understand the content of images and videos and rank them. Page ranking of different texts is also possible. For example, if you search for "SEO" on Baidu or google.cn, you can see SEO websites in English and other languages. Even searching "SEO", you can see non Chinese pages, because some links may use "SEO" as anchor text to point to English pages. （ Beijing website production ）
The link factor has now overtaken the importance of page content. However, it is abstract to understand the link relationship. The influence of the factors on the page on the ranking can be seen and easily understood. To give a simple example, when searching for a specific keyword, SEO personnel can see the results of the previous few pages as long as they observe the results; What is the impact of keywords appearing in the title tag, and what is the impact of keywords appearing in the front? If you have technical resources, you can also make large-scale statistics to calculate the relationship between different positions and rankings of keywords appearing in the title tag. Although this relationship is not necessarily a causal relationship, it is at least a statistical relationship, which enables SEO personnel to roughly understand how to optimize.
The impact of links on rankings cannot be understood intuitively, and it is difficult to make statistics, because no one can obtain the link database of search engines. The best we can do is qualitative observation and analysis.


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