The design example of the title of the Baidu Word segmentation theory (last article)

The impact of a page in the search engine rankings is one of the most important factor is the correlation, and the most direct reflection of a page and user search behavior is related to the title, then want to write a title you can not go deep understanding of the search engine participle principle! Take Baidu as an example, after 10 years or so of perfect, Baidu in Chinese search is already a very efficient search engine, and we also know that a high efficiency of search engine work will certainly involve a lot of well-known technical points, but if we can simplify the complex search engine work to three steps then is: query, participle, matching. Then we see through the example of how the search engine is handled, in order to be able to understand more intuitive, we sailors (young like this song) as the main key words in Baidu experiment.

how a search engine handles queries

1, the passive behavior of the search engine.

If the user according to their wishes in the search for the key words with the sky, punctuation, then the search engine will optimize the user's behavior to query, this should be very good understanding! For example: Baidu search Zheng Sailors and search Zheng Sailors, returned the result will be different! Perhaps this example is not intuitive, For a more intuitive example, search for: Zheng Chemistry and Zheng Chemistry respectively. The results of the search were as follows:

Look at the picture is very intuitive, search engine will be optimized to consider the user's query behavior.

2, the search engine's initiative behavior

Search engine received the user's search content, will be based on their own basic dictionary and special Thesaurus for the user's query for active participle, such as search: Zheng Sailors, Baidu will be based on its search word library (guess: People's names library + song name Library) intelligence will Zheng and sailor two words to query respectively, search results such as:

So what if the search content contains both Chinese and English? Baidu will do the English as a separate piece to deal with, and then the English word before and after the words as a separate block. Trial search: Zheng bt download, the results are as follows:

　　

Two, search engine how to do participle and match

Word segmentation according to string matching, the most common have three kinds of word matching method, respectively: forward maximum matching method, reverse maximum matching method and shortest path segmentation method.

1, what is the forward maximum matching method?

Simple point of view is from left to right to the word, such as Baidu: Martial arts legend said, martial arts and legends are two different words, according to user search habits and thesaurus analysis Baidu will return a positive to the largest match, that is, the word is: martial arts legend. The search results are shown below:

2, what is the reverse maximum matching method

The reverse participle fixed name meaning is from right to left to do participle. Back to just the example, Baidu: Zheng Chemistry, if according to the positive participle then we should get the result is: Zheng chemistry. So why is the results of Baidu search not so? But it is divided into Zheng chemistry. As shown in figure:

This is because Baidu search results are used to match the reverse participle!

3, positive and negative to the same time participle matching

And there is a special situation, is the combination of key words before and after the content is considered to be small, and the search results roll also contains the two groups of words, Baidu will be the positive and negative to the simultaneous segmentation matching, such as search key words: Beijing Hua Smoke, returned the results are as follows:

　　

4, what is the minimum of participle

Refers to: The number of words should be the pursuit of the least, to search: martial arts outside the legend for example, the theory can be divided into: martial arts rumored, but Baidu is only divided into the martial arts legend, that is, can reduce the number of groups as far as possible, can be divided into two groups as far

Only after the search of the basic principles of Word segmentation to know more about the known, targeted for the site home page, the design of the title, so that a better layout of long tail words, so that the flow maximization. Article Original: Point Water blog Address: http://www.cuihonghai.com/

Then understand the search engine of these participle principles after how to use the title design rationally? How to make the function of the long tail word strategy of the industry website full play? Let the traffic multiply? Point water in the next article will further through an example to detail how the industry Web site title design and long tail Word layout Method!