Seoer How to use the search engine denoising principle

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What is denoising?

Denoising is a basic step in the process of search engine preprocessing, the elimination of noise is in the search engine crawl the page in the preprocessing process after the extraction of words, participle, to stop the word after, refers to the search engine to identify the page on the calculation page ranking meaningless, such as navigation bar, copyright text description, advertising and so on block. Search engines need to deal with a very large number of pages, and this part of meaningless content is very large, in order to save computational resources, faster calculation, the search engine in the preprocessing will be identified after the content of the elimination, this process is called denoising, and the elimination of the content is called noise.

Search Engine denoising principle

Search engine denoising is generally for the same site, the search engine will not because a certain part of a site is noise and determine the corresponding part of another site is also noise, and for a website, now search engine denoising principle can be divided into three categories:

1, based on the principle of visual information. Refers to the use of the layout of the elements of the page, so that the layout information can be used to partition the page, retaining the middle of the page, while other areas are considered noise.

2, based on the principle of Web page structure. That is, according to HTML tags on the page to partition, some of the head, navigation, text, advertising and so on the block, only grasping the main body and other important parts.

3, basic template principle. Refers to extracting the same template from a set of pages and then using these templates to extract useful information from the Web page.

Seoer How to use the search engine denoising principle

How to reduce noise artificially?

Want to reduce noise need to start from the search engine denoising principle, according to the search engine principle can carry on the following manual noise reduction work:

1, search engine will be based on visual information to identify noise, therefore, when building a Web page, if you want to search engine as soon as possible to eliminate noise should be as far as possible to follow the general principles, the content of the text in the middle of the page, in line with the general rules of the site, and do not get some very personalized pages, to increase the difficulty of identifying

2, search engine will be based on the structure of the Web page to identify noise, since it is based on HTML tags to the Web page, that is, after the first crawl, then the content is not related to the text if not be crawled is not to reduce noise? So many useless blocks such as headers, advertisements, copyright notices can be realized through JS call, Because these blocks are repeated in the station, especially advertising, copyright, comment. Once included will be a large number of de-noising processing, even can cause duplication. But there is a point must be noted, is to put JS plate must be if you do not want to be crawled plate, do not need to participate in the ranking of the content also removed.

3, the search engine will be based on the Web template to identify noise, this is for the same site, a site template, you can make search faster processing noise, so we should try to build a Web page with the same set of templates, especially in the revision of the time do not easily move the template to help search engine identification noise block, Imagine, if the site each page template is different, then the search engine for each page need to start from the end of recognition, greatly increase processing time.

Second, how to make artificial noise?

Someone may say, have said that the noise reduction, it is not easy to add noise, noise reduction in turn can be, if you think so. That wood SEO is going to say, this is not nerve? Tell you how to reduce noise, and in turn use this to add noise, deliberately let the article is not in the middle area? Each page is a different template? Artificial noise is generally hope that the content of their website is the search engine to be original, in the text area appropriate to add noise can "confuse" search engine. And the addition of noise and noise is the opposite, the main noise is for different websites and Web pages.

Here are some ways to add noise: 1, templates and other sites are not the same, which is why we recommend not to use the same template with others, so you can avoid duplication of site templates. 2, in the text under the title to generate the release date, author, source and other related information, this is generally unique, such as Lou Blog article is also a source of articles. 3, in the text area to the left or lower part of the call related articles, recommended reading modules, such as the site calls generated text and links should also be different from other Web pages. 4, in the text area call related tags, so that the resulting label text and links are original, but also unique, this point Lou that also have.

Author: wood-Wood seo http://blog.sina.com.cn/s/blog_c206a2c30101gag7.html