Search engine Optimization How to do the internal chain and outside the chain?

One, hyperlink analysis is the main algorithm of search engine today

Today's search engine algorithms are very complex, including Baidu and Google have a lot of rules, so many rules are basically based on the hyperlink analysis technology, the entire Internet page is linked through hyperlinks, so hyperlinks are now existing and mainstream search engine algorithm one, So inside chain and outside chain is an important content of SEO.

Second, weight transfer and PR value

In all of the hyper-link analysis techniques, PR is the most well-known one, PR is a common concept of SEO, then what is the PR value, the PR value is Google to judge a page weight value, but the PR value is not so what, the PR value is just one of the many search engine algorithms, It is not a decisive factor for a website.

PR algorithm is actually very simple, the PR value of the calculation formula is

PR (A) = (1-d) +d[pr (T1))/C (T1) +...+PR (TN)/C (TN)]

①a represents page A. ②PR (a) represents the PR value of page A. ③d is the damping coefficient. Generally considered d=0. 85

④t1...tn represents the link to page A's page T1 to TN

⑤c represents the number of export links on the page. C (t1) is the number of export links on the page T1.

Many people in the chain when the PR value as a major reference, in fact, this is not scientific. Sometimes do friendship link exchange will see the other side PR value is very high, think not to change, in fact such chain quality is not necessarily high, give a simple example, the following figure

The first website PR value is 8, its PR value is quite high, because the PR value of the promotion of the number of external chain is exponential growth, if you now ask, if the above two sites and you do outside the chain, then you think which site for your high value? Most people will think that PR is 8 of the value of the high. But we say, the PR value transmission to you is the page weight, but in the current algorithm accounted for a small proportion, we should consider the PR output value, the first site although the PR value as high as 8, he this site has 220 outside the chain, you go in after is one of 220, according to the formula, 8/220*0. 85=0. 18, the resulting data is very low, the latter although the PR value is lower, and again with the PR value calculation formula to calculate, the site's PR output value as high as 0. 22, so we do friendship link exchange, we first want to see is not the other side of the site's PR value, but to see the PR output value.

Third, Baidu Bomb

There is such an example, there has been such a period of time, in Baidu search for SB ranked first is Google, Google in the search for SB ranked number one is Baidu, at that time a lot of people is this is Baidu and Google's malicious behavior, in fact, this is a hoax for SEO workers.

There is such an example, Baidu "record" two words, ranked first site is the Ministry of the Web site, but the title has been tampered with "here to fill in the record number" This is what reason? This is because most of us build stations are rarely their own development procedures, most of which are built with a CMS station, domestic web site construction, most need to record, In some templates fill in the position of the record number set up such a word "fill in the record number", reminding the user in the background to modify, but a considerable part of the webmaster will buy foreign servers or some other exempt from the record server, so in the background did not modify this part, because the number of the chain is Huge to Baidu even title have to change, through these two examples can explain, now do SEO, outside the chain or play an important role.

Four, outside the chain strategy

Weight and relevance are key factors in determining the ranking of Web sites in search engines, so the following three strategies are proposed:

1. High weight, high relevance of the site.

1 government websites, university websites

2 The Internet and other authoritative media sites

3) Large web sites, related portals

2. The quantity of the chain, distribution breadth and increase speed.

1) Number of outside chain

2) Distribution breadth (domain name, IP, type) ① taboo in the same type and the topic is not related to the release of a large number of sites outside the chain (such as in the A5 Forum on the use of signatures to publish some films, games and other topics unrelated to the chain), type to involve forums, blogs, questions and answers, libraries and many other aspects) Using a server to create a large number of stations will be punished by search engines.

3 Increase the speed of the chain, to maintain a balanced speed.

3. Anchor text strategy.

1 do not use a single anchor text, deformation words, etc.

2 main keywords to occupy the majority of the anchor text

3 The suggestive text of the link is also important

Five, outside the chain method

1. Find a highly relevant website

1 Catalog Search, search results

2 Explore the chain of other excellent websites of the same kind

3 Active Contact (forum, Q Group), independent manufacturing

2. Outside the chain construction method

1 Submit directory, links, "buy" link

2 News submission, Forum blog, encyclopedia question and answer

3) Link Bait

A) programs, templates, Plug-ins, etc.

b) Quality Articles

c) Fun Programs

VI. Internal chain Strategy

1 structure unobstructed, important page weight collection

2) The relevance of the inner chain is equally important

3) Anchor text inner chain (widely and reasonably distributed)