-
Search engines have become an indispensable tool in the daily lives of netizens. Ordinary netizens use them to find information, and webmasters rely on them to make a living. Today we will talk about some principles of search engines.
The most important concept in Internet technology is "hyperlink". All kinds of information on the Internet are connected through hyperlinks. After the emergence of search engines, they still start with hyperlinks and use hyperlinks as bridges to crawl. Web pages on the Internet, and then organize and classify the captured information into categories, and then store them in the database.
So what is the basis for classification? This leads to another important concept of search engines - correlation, which groups data with certain same attributes into one category. Friends who have experience borrowing books from the library know that, for example, if we are looking for "The Romance of the Three Kingdoms", We can first determine whether this book belongs to Chinese books, novels, or classical novels. Of course, this is just an example. The actual algorithm of the search engine is much more complicated than this.
So we often hear people say that when building a website, we must first determine the main keywords of the website (that is, the website theme), because search engines will classify the content of our website into a certain category based on our keywords. For example, if the theme of our website is: hard disk, then the search engine will classify us into the computer hardware category, and will put the captured content under this category in the future. When the user issues a search request, it can Display the results that meet the requirements from the database to users as quickly as possible.
Now you can take a look at your website statistics to see what words visitors use to come to your website. I think most webmasters will find that the source keywords of the website are related to the main keywords of the website. , for example, it may be "what to do if the computer hard drive is broken", "what brand of hard drive is good", "WD hard drive price" and other long-tail keywords.
The World Cup has started in the past few days, so the webmaster of this hard disk website thought, my website has a good weight, and with the content related to the World Cup, isn't the traffic going to be huge? Is this really the case? Unfortunately, for most small and medium-sized websites, doing so cannot bring more traffic to the website. Because of the relevance we mentioned before, this hard disk site is classified into the category of computer hardware, and the keyword World Cup obviously does not belong to this category, especially for some very popular keywords. Due to fierce competition, some topics are not It is basically an impossible task for relevant websites to get a share of the pie. Of course, if you search for the keyword "World Cup designated hard drive", you are likely to get a good ranking.
So does the search engine see which words appear more frequently on our website and set this word as the main keyword of the website? Well, this is one aspect, so it leads to another factor that affects rankings - keyword density. . Therefore, some early SEOers were able to obtain better rankings by stacking keywords. Another factor for search engines to determine the theme of a website is to look at the anchor text of incoming links, that is, what is the link text used when other websites link to our own website? A more classic example is Alibaba's international station ( http://www.alibaba.com ). You can see that there is no word "international station" on its entire homepage, but why is it ranked No. 1 on Google? First, where is Baidu second? The reason is that all Alibaba websites use the keyword "international station" when linking to www.alibaba.com .
Here comes another important factor that affects rankings - external links. The reason why word-of-mouth publicity has a high degree of trust is because whether something is good or not is not what the merchants themselves say, but what everyone says after using it. The so-called Justice is in the hearts of the people, a crowd of words can make a fortune, three people can become a tiger, etc. Similarly, the reason why search engines think a website is good is not determined by the webmaster himself, but by the number of links from other websites pointing to it. But there is another question here. Do other websites link to a certain website because it is good? I don’t think so. It may be because this is a scam website. People link to this website to remind everyone to be careful about this website. Therefore: you can’t be famous forever, but you also have to be infamy for thousands of years. This view also applies to the Internet. Some vulgar celebrities on the Internet obviously understand this well.
Well, that’s it for today. Everyone is welcome to discuss. The series of SEO vernacular articles will continue. Friends who like it, please subscribe to this blog. Please give the link to this site in the form of a link when reprinting.