Recognize major domestic and international search engines and types of search engines

One,Domestic Search Engines

1.Baidu

Founded in January 2000 and headquartered in Beijing, Baidu's mission is to provide users with convenient and reliable access to information. The name Baidu is derived from the phrase "Seek him in all directions" in the Song Dynasty lyricist Xin Qiji's "The Case of Green Jade", reflecting Baidu's dedication to Chinese information retrieval technology. The interface of the Baidu website is shown in Figure 1.

Over the years, the Baidu website has included tens of billions of Chinese web pages, and this number is growing at a staggering rate every day. Moreover, Baidu's servers are distributed throughout the country and are able to return search results to local users directly from the nearest server, thus realizing extremely fast search transmission speeds. Baidu's website handles hundreds of millions of search requests from more than 100 countries and regions every day, allowing users to find timely and comprehensive information in Chinese from around the world.

2.360 Search

360 Search is one of the widely used mainstream search engines, and its interface is shown in Figure 2. 360 Search provides a wide range of search products such as web pages, news, movies and TV, and brings users a safe and authentic search service experience. 360 Search not only has common search technologies, but also creates innovative technologies such as PeopleRank algorithms and Thumb Plan. The introduction of these technologies gives 360 Search a unique advantage in the accuracy and relevance of search results.360 has built a core search technology team of hundreds of engineers with tens of thousands of servers. Every day, this huge search citation system is able to crawl billions of web pages and include quality web pages. Whether it is the speed or quality of web search, 360 search excels.

3. Sogou Search

The interface of Sogou Search is shown in Figure 3. Sogou Search is committed to digging deep into Chinese Internet information and endeavors to help Internet users get the information they need faster, creating greater value for users.

In Sogou Search, the "dead link rate" of music search is lower than 2%, which means users can efficiently find the music resources they need. Image search has a unique group image browsing function, which makes it easier for users to browse and enjoy the wonderful pictures. Meanwhile, News Search provides a "Watch What's Happening" home page that reflects hot Internet events in a timely manner so that users don't miss any important information. The map search provides a seamless roaming function across the country, making it easier for users to find locations and plan routes. These excellent features can greatly satisfy users' daily needs and help users better utilize Internet resources. Explore a wider world.

Two,Foreign Search Engines

1. Google

Google (Google) is recognized as one of the largest search engines in the world and a popular search engine on the Internet.Google's interface design is simple and clear, as shown in Figure 4.Google supports multiple languages and provides interfaces in more than 30 languages.

Google has won the favor of the majority of users with its clean and simple page design and highly relevant search results. Every day Google needs to handle about 200 million search requests and stores more than 3 billion web files in its huge database. Users can satisfy different needs through both regular and advanced search functions.

2. Bing

Bing is a search brand launched by Microsoft in 2009, which integrates many amazing features and innovative experiences to bring users a new search experience.The interface of Bing is shown in Figure 5.Bing has many unique features, including search homepage image design, a new search result navigation mode, and innovative user experience modes for categorized and related searches, etc. These features make it easier for users to find the information they need and provide a more personalized search experience. These features make it easier for users to find the information they need and provide a more personalized search experience.

Three,Types of Search Engines

With the rapid development of search engine technology, many types of search engines continue to emerge, providing users with more diverse search options. I will give you a detailed introduction to the full-text search engine, directory indexing, meta search engine, vertical search engine.

1. Full-text search engine

Full Text Search Engine (Full Text Search Engine) is a widely used search engine. This search engine from the Internet to extract information from various sites (mainly web page text), to build up a huge database.When users make a query, they will retrieve records matching the user's query criteria and return search results in a certain order of arrangement. The advantage of full-text search engine is its wide coverage and very high search efficiency, so that users can quickly find the information they need. The most representative foreign full-text search engine is Google, the domestic is Baidu and 360 search.

2. Catalog Index

Directory indexing (Search mmdex/Directory), also known as categorized search, was one of the first services to provide access to website resources on the Internet.It mainly collects and organizes the resources on the Internet, and according to the content of the searched web pages, assigns the corresponding URLs to different levels of classes in the corresponding classified subject directory, forming a kind of classification structure index like a library catalog.
When users want to find a specific website in the directory index, they can either use keywords to search for it or follow the relevant directory level by level. However, the results provided by the directory index is only the URL address of the website, not the specific website page content. In China, Sohu directory, hao123, etc. are typical directory index site; foreign is Dmoz, etc..

3. Meta Search Engine

Meta search engine (META Search Engine) is a kind of receiving user query request, at the same time in more than one search engine search, and will return the results to the user's search tool.The advantage of meta search engine is that it can expand the search scope and provide more comprehensive search results. Users can obtain information from multiple search engines in a one-stop manner through metasearch engines, saving time and effort in searching. Some famous meta-search engines include InfoSpace, Dogpile, Vivisimo, etc.

4. Vertical search engine

Vertical search engine (VerticalSearch Engine) and full-text search engine is different, it is more focused on meeting the specific areas and needs of the search service, and therefore has a significant advantage in specific areas.First, vertical search engines are able to provide more accurate and relevant search results through targeted algorithms and data indexing. Second, vertical search engines tend to integrate domain-specific resources and provide users with richer and more diverse content to meet different levels and types of needs. Finally, vertical search engines usually have more in-depth domain knowledge and stronger specialization, and can provide more professional and authoritative search services. -Some famous vertical search engines include Baidu Patent, Baidu Library, Google Scholar and so on.