Question 1: What are the common search engines? A search engine is a system that collects and sorts out information resources on the Internet and then provides them to you for inquiry. It includes three parts: information collection, information arrangement and user inquiry. A search engine is a website that provides you with information "retrieval" service. It uses some programs to classify all the information on the Internet and help people find the information they need in the vast network. Early search engines collected the addresses of resource servers on the Internet, divided the resources they provided into different directories, and then classified them layer by layer. People who want to find the information they want can enter layer by layer according to their own classification, and then they can finally reach their destination and find the information they want. This is actually the most primitive way, which is only applicable when there is not much information on the Internet. With the geometric growth of Internet information, a real search engine appears. These search engines know the beginning of every page on the website, then search all the hyperlinks on the Internet and put all the words representing hyperlinks into a database. This is the embryonic form of search engine now. Use Yahoo! With the appearance of Internet, the development of search engine has entered a golden age, and its performance is better than before. Today's search engines don't just search for information on web pages, they become more comprehensive and perfect. With the authority of search engine Yahoo! For example, since March 1995, Yahoo was founded by Chinese American Yang Zhiyuan and others! From the beginning to the present, they have developed from a single search engine to a variety of network services such as e-commerce, news information service and personal free e-mail service, which fully illustrates the process of the development of search engines from single to comprehensive. However, due to the working mode of search engines and the rapid development of the Internet, the search results are increasingly unsatisfactory. For example, searching for the word "computer" may result in millions of pages. This is because the search engine optimizes the search results through the correlation with the website, and the correlation of the website is determined by the formulas such as the position of keywords in the website, the name of the website, and the label. This is why the search results of search engines are numerous and miscellaneous. Due to the development and changes of the Internet, the database in search engines must contain dead links. In this article, we introduce google, which is the prototype of a large search engine. Search engines are widely used in hypertext. Google's design can efficiently crawl web pages and build indexes, and its query results are better than other existing systems. This prototype full-text and hyperlink database contains at least 24,000,000 web pages. We can download it from google.stanford.edu/.. Designing a search engine is a challenging job. Search engines index hundreds of millions of web pages which contain a large number of very different words. Answer thousands of questions every day. In the network, although large search engines are very important, they are rarely studied in academic circles. In addition, due to the rapid development of technology and a large number of web pages, building a search engine now is completely different from three years ago. This paper introduces our large search engine in detail. As far as we know, this is the first published paper that describes it in such detail. In addition to the problems encountered when applying traditional data search technology to such a large number of web pages, there are many new technical challenges, including applying additional information in hypertext to improve search results. This paper will solve this problem and describe how to use the additional information in hypertext to build a large practical system. Anyone can post information on the internet at will, and how to deal with these unorganized hypertext effectively is also a problem that this paper should pay attention to. World Wide Web, search engine, information retrieval, PageRank, Google 1 Introduction The Web has brought new challenges to information retrieval. The amount of information on the network is increasing rapidly, and at the same time, there are new inexperienced users to experience the art of the network. People like to use hyperlinks to surf the Internet, usually starting from important web pages or search engines like Yahoo. Everyone thinks;

Question 2: What are the main search engines in China? Baidu Chinese search engine

The world's largest Chinese search engine. Provide webpage snapshot, webpage preview/preview all webpages, related search words, typo correction tips, news search, Flash search, information express search, Baidu search and search assistance center.

Peking University Skynet Chinese-English Search Engine

Developed by Peking University, there are three versions: Simplified Chinese, Traditional Chinese and English. Provide full-text search, newsgroup search and FTP search (FTP sites such as Peking University and Chinese Academy of Sciences). At present, about 1 10,000 WWW pages (domestic) and1.40,000 newsgroup articles have been collected. Keyword search in simplified Chinese, traditional Chinese and English is supported, and retrieval of numeric keywords and URL names is not supported.

Sina search engine

One of the largest Chinese search engines on the Internet. There are 18 categories,100000 subheadings and 200000 websites. Provide website, Chinese page, English page, news, Chinese-English dictionary, software, Shanghai and Shenzhen stock markets, games and other resource information.

Yahoo China search engine

Yahoo! Is the most famous directory search engine in the world. Yahoo China officially opened in September, 1999, which is Yahoo's 20th website in the world. Yahoo! Directory is a navigation guide for network resources, including 14 topics.

Sohu search engine

Sohu launched the first large-scale classified search engine in China on 1998, and now it has developed into the most influential classified search engine in China. With more than 8 million page views every day, you can find websites, webpages, news, websites, software, yellow pages and other information.

Netease search engine

Netease New Generation open directory project Management System (ODP). There are nearly 10,000 volunteer directory administrators. A professional authoritative directory query system with more than 10000 categories, more than 250000 active site information, 500~ 1000 site information added every day and more than 5 million daily visits has been built for the majority of netizens.

372 1 Network Real Name/Intelligent Search

372 1 Company provides Chinese Internet access service, 372 1, which allows users to directly input Chinese names without memorizing complicated websites. 372 1 intelligent search system not only contains accurate online real-name search results, but also integrates many search engines.

360 integrated search engine

Question 3: What is a comprehensive search engine? The major search engines in the world are comprehensive.

Google, Baidu, Yahoo, Bing, Google. . .

Question 4: What are the basic types of commonly used search engines? A search engine is a system that collects and sorts out information resources on the Internet and then provides them to you for inquiry. It includes three parts: information collection, information arrangement and user inquiry.

A search engine is a website that provides you with information "retrieval" service. It uses some programs to classify all the information on the Internet and help people find the information they need in the vast network.

Early search engines collected the addresses of resource servers on the Internet, divided the resources they provided into different directories, and then classified them layer by layer. People who want to find the information they want can enter layer by layer according to their own classification, and then they can finally reach their destination and find the information they want. This is actually the most primitive way, which is only applicable when there is not much information on the Internet. With the geometric growth of Internet information, a real search engine appears. These search engines know the beginning of every page on the website, then search all the hyperlinks on the Internet and put all the words representing hyperlinks into a database. This is the embryonic form of search engine now.

Use Yahoo! With the appearance of Internet, the development of search engine has entered a golden age, and its performance is better than before. Today's search engines don't just search for information on web pages, they become more comprehensive and perfect. With the authority of search engine Yahoo! For example, since March 1995, Yahoo was founded by Chinese American Yang Zhiyuan and others! From the beginning to the present, they have developed from a single search engine to a variety of network services such as e-commerce, news information service and personal free e-mail service, which fully illustrates the process of the development of search engines from single to comprehensive.

However, due to the working mode of search engines and the rapid development of the Internet, the search results are increasingly unsatisfactory. For example, searching for the word "computer" may result in millions of pages. This is because the search engine optimizes the search results through the correlation with the website, and the correlation of the website is determined by the formulas such as the position of keywords in the website, the name of the website, and the label. This is why the search results of search engines are numerous and miscellaneous. Due to the development and changes of the Internet, the database in search engines must contain dead links.

In this article, we introduce google, which is the prototype of a large search engine. Search engines are widely used in hypertext. Google's design can efficiently crawl web pages and build indexes, and its query results are better than other existing systems. This prototype full-text and hyperlink database contains at least 24,000,000 web pages. We can download it from google.stanford.edu/..

Designing a search engine is a challenging job. Search engines index hundreds of millions of web pages which contain a large number of very different words. Answer thousands of questions every day. In the network, although large search engines are very important, they are rarely studied in academic circles. In addition, due to the rapid development of technology and a large number of web pages, building a search engine now is completely different from three years ago.

This paper introduces our large search engine in detail. As far as we know, this is the first published paper that describes it in such detail. In addition to the problems encountered when applying traditional data search technology to such a large number of web pages, there are many new technical challenges, including applying additional information in hypertext to improve search results.

This paper will solve this problem and describe how to use the additional information in hypertext to build a large practical system. Anyone can post information on the internet at will, and how to deal with these unorganized hypertext effectively is also a problem that this paper should pay attention to.

World Wide Web, search engine, information retrieval, PageRank, Google 1 Introduction The Web has brought new challenges to information retrieval. The amount of information on the network is increasing rapidly, and at the same time, there are new inexperienced users to experience the art of the network. People like to use hyperlinks to surf the Internet, usually starting from important web pages or search engines like Yahoo. Everyone thinks;

Question 5: What are the search engines with better comprehensive categories: Google, Baidu, Yahoo, Bing and many others in China? Sohu, Netease and sogou are not as well-known as Google and Baidu.

Question 6: What are the four major search engines, google?

Baidu

Search. Yahoo

Search. msn

or

Google

Yisou

Baidu

Sogou

Question 7: What is a search engine? What is the function? What is a search engine?

Search engine is search engine in English. Search engine is a system that sorts and classifies Internet information resources and stores them in network database for users to query, including information collection, information classification and user query.

From the user's point of view, the search engine provides a page with a floating rope frame. After words are entered in the search box and submitted to the search engine through the browser, the search engine will return a list of information related to the content entered by the user. In fact, search engine involves many theories and technologies: digital library, database, information retrieval, information extraction, artificial intelligence, machine learning, natural language processing, computer linguistics, statistical data analysis, data mining, computer network, distributed processing and so on, which is comprehensive and challenging.

The purpose of search engine, for ordinary netizens, search engine is just a query tool. As a tool, users should understand the function and performance of search engines, and explore and master their usage methods and skills. For merchants, search engine is a profitable product or service, and as a product, search engine manufacturers should develop, improve and innovate their own search technology; As a service, search engine marketers should study search engine optimization and promotion. Different purposes of using search engines constitute different groups of search engine research and different research focuses on search engines from different angles.

Question 8: What is the largest search engine in the world? Which Google search engines were founded in 1988 by Dr. Larry Page and Dr. sergey brin of Stanford University, and have become the largest in recent years? At present, there are 200 million search requests to be processed every day, and there are 3 billion WEB files in the database. Provides two functions: regular search and advanced search. Number of information items. Multilingual. 1. When querying as a whole, it is best to put all quotation marks. Such as "e-commerce". If you directly input e-commerce, it will be automatically divided into electronic and commercial. 2. If you need to include a specific word in the index document, you can add a+sign in front of it, and there can be no space between the+sign and the word. 3. General search engines support Boolean operators. Pay attention to some features: 1. When searching by keywords, the returned results contain all or part of keywords. When searching for a phrase, it is performed in an accurate way by default. Letters are lowercase by default, stems are not used, and wildcards are not supported. 2. You don't need to use and when querying. When narrowing the scope, just enter more keywords or use the second search. Or not supported. 3. Only page titles, links and page bytes are displayed. Matching keywords are displayed in bold. 4. It also has the function of searching pictures. Having a global map means having navigation function. 6. Providing pre-translation functions Google has four functional modules: website, picture, newsgroup and directory service. Google has a fast search speed recorder, and the number of web pages is among the best in search engines. It supports at most 132 languages, and the accuracy of search results is extremely high. It has unique image search function and powerful newsgroup search function.

Question 9: What are vertical search engines and integrated search engines? Vertical search engine is a new service mode of search engine, with relatively large information, inaccurate query and insufficient depth. It provides valuable information and related services for specific fields, specific people or specific needs. It is characterized by "specialization, precision and depth" and has industry color.

The comprehensive search engine, also known as the general search engine, does not limit the type and subject range of the retrieved information in the retrieval process. It can take all network information resources as the retrieval object, and the retrieval results include all network information resources involving any field and any aspect. These information are arranged according to the matching degree with the search conditions, which provides users with more choices on the basis of quickness and accuracy.

Question 10: What is a comprehensive search engine? If not, it will affect the development of the Internet.