I have been engaged in search engine related work has been 11 years, today with you talk about search engine core algorithm: Natural language and Boolean search. The discussion leads to the following conclusion: Search crawler and search
Using INBOOLEANMODE to modify the program, MySQL can also perform a Boolean full-text search: mysqlSELECT * FROMarticlesWHEREMATCH (title, body)
Using in boolean mode to modify the program, MySQL can also perform a BOOLEAN full-text search: mysql SELECT * FROM articles where
Using in Boolean mode to modify the program, MySQL can also perform Boolean Full-text search:
mysql> SELECT * FROM articles WHERE MATCH (title,body) -> AGAINST ('+MySQL -YourSQL' IN BOOLEAN MODE); +----+-----------------------+-------------------------------------+ | id | title | body | +----+
In the following chapters, we will discuss some basic knowledge about search engines. To really do a good job in search engines, There is no shortcut. To do a good job of searching, the most basic requirement is to analyze 10-20 bad search results every day, so that you will feel it only after a period of time. However, many engineers often cannot do this. The
MySQL full-text search uses in boolean mode to modify the program. MySQL can also execute BOOLEAN full-text search:
Mysql> SELECT * FROM articles where match (title, body)-> AGAINST ('+ MySQL-yoursql' in boolean mode );+ ---- + ----------------------- + --------------------
Technology is divided into two types of surgery and road, the specific way of doing things is surgery, the principle and principle of the way.
The principle of search engine is actually very simple, build a search engine roughly need to do such a few things:
Automatically download as many pages as possible;
Establish a fast and efficient index;
A fair and accurate ranking of Web pages based on relevance.1
Technology is divided into two types of surgery, the specific way of doing things is surgery, the principle and principles of doing things are Tao.
The principle of search engine is actually very simple, build a search engine roughly need to do such a few things:
Automatically download as many pages as possible;
Establish a fast and effective index;
A fair and accurate sort of page based on relevance.1
ObjectiveBoolean operations are the great Boolean inventions of the algebra operations, only simple logic and or not, at first people did not find useless, and later on the impact of the computer is too large, from infrastructure to search engines everywhere.SceneAs a yard farmer, I also met the needs involved in my daily work. The scenario is that our backend service has a complex configuration that involv
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