What is a search engine?
Search engine refers to collecting information from the Internet according to certain strategies and using specific computer programs. After organizing and processing the information, it provides retrieval services to users and displays the retrieved relevant information to users. system. It is a retrieval technology that uses specific strategies to retrieve formulated information from the Internet and feeds it back to users based on user needs and a certain algorithm.
Search engine refers to collecting information from the Internet according to certain strategies and using specific computer programs. After organizing and processing the information, it provides users with Retrieval service, a system that displays retrieved relevant information to users.
Search engine is a retrieval technology that works on the Internet. It aims to improve the speed at which people obtain and collect information and provide people with a better network usage environment. In terms of functions and principles, search engines are roughly divided into four categories: full-text search engines, meta-search engines, vertical search engines and directory search engines.
Search engines rely on a variety of technologies, such as web crawler technology, retrieval and sorting technology, web page processing technology, big data processing technology, natural language processing technology, etc., to provide information retrieval users with fast and highly relevant information. Serve.
The core modules of search engine technology generally include crawlers, indexing, retrieval and sorting, etc. At the same time, a series of other auxiliary modules can be added to create a better network usage environment for users.
With the development of search engines today, the infrastructure and algorithms have basically taken shape and matured technically. Search engines have developed into systems that use specific computer programs to collect information from the Internet based on certain strategies, organize and process the information, provide retrieval services to users, and display relevant information to users.
The above is the detailed content of What is a search engine?. For more information, please follow other related articles on the PHP Chinese website!

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