Do SEO external link building Experience Summary

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Do SEO, external link construction mentioned more than more is the relevance of the link, after all, these links are mostly to search engines to see, search engines are crawling by spiders. We must make clear that "spider" is a "program" is not "artificial" he will not use our human thinking logic to judge the relevance of the Spider program is not very complex. Understand the above I say, below I say I to "relevance" of view and experience.

For example, your site is a new station, open the station not a few days, just submitted, spiders it is based on "crawl index" to crawl.

First spider through a variety of channels, connected to your site for spiders, the new site features is not in the site code in the "Head" section of the "title" tag elements to judge. Spider He will first crawl "title" Word to do keyword reference, and then go to the page code to find other relevant, "key words." One thing you can rest assured, spiders can judge some JS code and page tags and he will pay attention to the text and Div fast in the title of the "Key words" can also understand, "H1"-"H4" a series of this can also confirm why we say "H1"-"H4" inside the content than "body" The weight of the content is high. Finally, the spider will "tilte" inside the body of the text of the part of a more repeated word positioning reference keywords

Then the spider will be based on "reference keyword" judgment "keyword extension" combined with the above analysis to determine the general "keyword" in the next step of the page crawl work. Next, the spider will calculate all the keywords in the site code in the number of occurrences, and so on. As cardinality. Calculate the number of keywords in the "body" tag as the last addition to the molecule, is your site's keyword density. With "Tilte" inside the keyword as the basis, comprehensive "extended keyword" contrast in the "body" part of the key words, compared to their each text differences, and differences. When the density and million can station keyword difference between the two get the conclusion, there will be a weighted calculation formula, to judge the site's keywords, determine the content of the site and keyword relevance. The key words of the page and the content of the website are all out, then how to judge the correlation of the outside chain part? Now let's take a look at the second part of the chain and the relevance of the site to judge

One-way connection

Someone else's web connection is connected directly to your site, which is called a single connection. On his website, your website connection description must be related to or similar to the keywords he has contacted your website. The spider's method of judging is the same as the first part, except that the beginning of the keyword reference becomes the contact description text on his web page. The relevance of the site and your site is how high spider is to judge it? This link describes the text several became the point.

Let me make a simple assumption.

Your site keyword vs--relevance judgment, set it for a→ stroke text ← His web keywords-relevance judgment set to B

A and B after, in contrast, the difference in a certain range, the spider will have a level of standard,

For example, A and B is less than 10%, in order to increase the correlation, the weight of 2 sites increased, as a result of a weighting,

Links section:

Speaking of the site of the description of the way a lot of words.

Your page's keyword vs (relevance judgment, set to a) → anchor text (one of the anchor text on the page) ← (relevance judged, set to B) His web page's keywords

Your page's keyword vs (relevance judgment, set to C) → anchor text (anchor text on another page) ← (relevance judged, set to D) the keywords of his web page

A and B in contrast to a weighted formula result: E;

C and D contrast to a weighted formula result: F

E and F are compared at last, and the result of the final weighting formula is obtained.

To judge the relevance of 2 Web pages in the Exchange links, 2 pages.

The above situation is suitable for one-way link correlation judgment, and friendship link correlation judgment.

Hope I wrote this article can be helpful to most of the webmaster.

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