Search engine from getting started to proficient

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Meimei (15 years old) love to surf the internet, usually she is to chat room, watch news, play online games and so on, a long time, feel a bit boring. This day Meimei asks: "Ni ni cousin, what do you surf the internet all day?" Nini said: "The internet to check information ah." Looking for information? "How to check?" Where are you looking? ... "a series of questions." Nini said: "Check the data is of course to use search engine ah." I usually write papers used materials, do the homepage of the pictures, computer knowledge, and even the electronic version of the novel, the latest CD audition are found through the search engine. Also, my home page This half a year visit, also thanks to the search engine ah. ”

Search？ Meimei feels very strange: "This search engine has so much power?" Well, I also want to learn to use search engines. "Yes, but I've been very busy recently, or let Xiao Zhang (Nini's boyfriend) teach you some basics." ”

"Meimei, learn to use a search engine first to understand some basic knowledge, but a bit boring oh, to have psychological preparation yo." "Xiao Zhang in the side hey-heh smile." Meimei's mouth hum: "Who is afraid, come." Xiao Zhang cleared his throat and began to explain:

"More than 10 years ago, WWW (World Wide Web) was not born, the Internet only cold text, no images and sound, and the number of sites are not much interested in a few sites, can be in a very short period of time to grasp all the information, Search engines do not appear at all necessary. 1993, the Internet appeared the first web browser mosaic, the following year Netscape launched the navigator. With the development of browsers, the web has been rapidly promoted, the number of sites has increased at an alarming rate, and we can no longer use traditional memory to cope with growing sites. So, the search engine was born. The first search engine was born in the United States, its name is Archie, was developed by a group of McGill University. ”

"The early search engine is to collect the address of the resource server in the Internet, and it is divided into different directories by the types of resources that they provide, and then classify them in layers." People want to find the information they want to go into their classification layer by layer, can finally reach the destination, find the information they want. This way, only applies when the Internet information is not much. ”

"As the information on the internet grows exponentially, the search engine begins to develop rapidly," he said. In the spring of 1994, the world appeared in the real sense of the search engine--lycos. With the advent of Yahoo!, the development of search engines also entered the Golden Age. Search engine family has been growing, gradually distributed to all corners of the information world, their species, technology is constantly changing. ”

Meimei listened for a long time, the mouth more and more Zhang: "Wow, did not expect the search engine has such a history." ”

"Of course, don't interrupt, the following is about search engine classification and principle, listen carefully." ”

"Although there are a large number of search engines, they can be roughly divided into three major types according to their methods of information collection and service delivery." ”

"Let's start with a Spider-based robotic search engine, which is automatically accessed by a robotic program called Spider (Spider), extracts web pages from a site, and extracts other pages from a link in a Web page, or moves to another site," he said. The indexer is indexed for the information collected, retrieves the index library based on the user's query input, and returns the query results to the user. ”

Meimei again unbearable: "Too difficult, I do not understand." ”

"Sounds complicated, doesn't it?" Simply speaking, is by the program automatically grasping the information on the Internet, ' search engine ' the word of the original meaning refers to this narrow search engine. ”

"The advantage of this kind of search engine is the information is big, update in time, need not human to intervene, the disadvantage is that the return is too much, have a lot of irrelevant information, the user must filter from the result." This type of search engine representatives are: AltaVista, Excite, Inktomi, FAST, Lycos, Google, the domestic representative: Baidu, Openfind and so on. ”

"Oh, I see it now, and I know Google, well known." Oh！ You go on. "Meimei finally understood."

"Then I'll give you the engine catalog search engine, which collects information either manually or in a semi-automatic manner, after the editors view the information, form a summary of the information and place the information in a predetermined categorization framework. Most of the information is web-oriented, providing directory browsing services and direct retrieval services. This kind of search engine because has joined the human intelligence, therefore the information is accurate, the navigation quality is high, the shortcoming is needs the artificial intervention, the maintenance quantity is small, the information quantity is not timely. This kind of search engine's foreign representative is: Yahoo, LookSmart, Open directory and so on, the domestic representative has Sina net, Sohu and so on website directory. ”

"Meimei, Meimei, hey, what are you doing yo, asleep?" ”
"Where Ah, I just think it and the previous kind of search engine has any difference!" ”

"Oh, I was about to say it. The directory database is built on a full-time editor or volunteer, after visiting a Web site, these editors write a description of the site and classify it as a predefined category based on the content and nature of the site, placing the URL and description of the site in this category, and when the user queries a keyword, Search software only searches in these descriptions. ”

"The directory's user interface is basically a hierarchical structure, the home page provides a basic number of major categories of access, users can go down at one level down until they find their interest in the category, in addition, users can also use the directory to provide search function directly to find a keyword, however, Because the directory is only searched in the description of the saved site, the dynamic changes in the site itself are not reflected in the search results, which is a big difference between the directory and the robot search engine. ”

"The last thing to talk about is Meta search engine, it is characterized by its own does not hold the Web page information database, when users query a keyword, it will be the user's query request to other search engines can accept the command format, and access to several search engines to query this keyword, and return the results of these search engines to the user after processing. For the returned results, the system will be repeatedly excluded, reordered, and so on. Service mode is web-oriented Full-text search. The advantage of this kind of search engine is that the amount of information that returns the result is bigger and more complete, the disadvantage is that users need to do more filtering. This kind of search engine's representative is WebCrawler, Infomarket and so on, the domestic sweep, the hurricane search pass and so on provides similar function. ”

"I really do not know that search engines have so many tricks, it is really a long experience." Meimei exclaimed.

"Ah, this is only the beginning, today we are here, you should rest, next time we continue." ”
Meimei (15 years old) love to surf the internet, usually she is to chat room, watch news, play online games and so on, a long time, feel a bit boring. This day Meimei asks: "Ni ni cousin, what do you surf the internet all day?" Nini said: "The internet to check information ah." Looking for information? "How to check?" Where are you looking? ... "a series of questions." Nini said: "Check the data is of course to use search engine ah." I usually write papers used materials, do the homepage of the pictures, computer knowledge, and even the electronic version of the novel, the latest CD audition are found through the search engine. Also, my home page This half a year visit, also thanks to the search engine ah. ”

Search？ Meimei feels very strange: "This search engine has so much power?" Well, I also want to learn to use search engines. "Yes, but I've been very busy recently, or let Xiao Zhang (Nini's boyfriend) teach you some basics." ”

"Meimei, learn to use a search engine first to understand some basic knowledge, but a bit boring oh, to have psychological preparation yo." "Xiao Zhang in the side hey-heh smile." Meimei's mouth hum: "Who is afraid, come." Xiao Zhang cleared his throat and began to explain:

"More than 10 years ago, WWW (World Wide Web) was not born, the Internet only cold text, no images and sound, and the number of sites are not much interested in a few sites, can be in a very short period of time to grasp all the information, Search engines do not appear at all necessary. 1993, the Internet appeared the first web browser mosaic, the following year Netscape launched the navigator. With the development of browsers, the web has been rapidly promoted, the number of sites has increased at an alarming rate, and we can no longer use traditional memory to cope with growing sites. So, the search engine was born. The first search engine was born in the United States, its name is Archie, was developed by a group of McGill University. ”

"The early search engine is to collect the address of the resource server in the Internet, and it is divided into different directories by the types of resources that they provide, and then classify them in layers." People want to find the information they want to go into their classification layer by layer, can finally reach the destination, find the information they want. This way, only applies when the Internet information is not much. ”

"As the information on the internet grows exponentially, the search engine begins to develop rapidly," he said. In the spring of 1994, the world appeared in the real sense of the search engine--lycos. With the advent of Yahoo!, the development of search engines also entered the Golden Age. Search engine family has been growing, gradually distributed to all corners of the information world, their species, technology is constantly changing. ”

Meimei listened for a long time, the mouth more and more Zhang: "Wow, did not expect the search engine has such a history." ”

"Of course, don't interrupt, the following is about search engine classification and principle, listen carefully." ”

"Although there are a large number of search engines, they can be roughly divided into three major types according to their methods of information collection and service delivery." ”

"Let's start with a Spider-based robotic search engine, which is automatically accessed by a robotic program called Spider (Spider), extracts web pages from a site, and extracts other pages from a link in a Web page, or moves to another site," he said. The indexer is indexed for the information collected, retrieves the index library based on the user's query input, and returns the query results to the user. ”

Meimei again unbearable: "Too difficult, I do not understand." ”

"Sounds complicated, doesn't it?" Simply speaking, is by the program automatically grasping the information on the Internet, ' search engine ' the word of the original meaning refers to this narrow search engine. ”

"The advantage of this kind of search engine is the information is big, update in time, need not human to intervene, the disadvantage is that the return is too much, have a lot of irrelevant information, the user must filter from the result." This type of search engine representatives are: AltaVista, Excite, Inktomi, FAST, Lycos, Google, the domestic representative: Baidu, Openfind and so on. ”

"Oh, I see it now, and I know Google, well known." Oh！ You go on. "Meimei finally understood."

"Then I'll give you the engine catalog search engine, which collects information either manually or in a semi-automatic manner, after the editors view the information, form a summary of the information and place the information in a predetermined categorization framework. Most of the information is web-oriented, providing directory browsing services and direct retrieval services. This kind of search engine because has joined the human intelligence, therefore the information is accurate, the navigation quality is high, the shortcoming is needs the artificial intervention, the maintenance quantity is small, the information quantity is not timely. This kind of search engine's foreign representative is: Yahoo, LookSmart, Open directory and so on, the domestic representative has Sina net, Sohu and so on website directory. ”

"Meimei, Meimei, hey, what are you doing yo, asleep?" ”
"Where Ah, I just think it and the previous kind of search engine has any difference!" ”

"Oh, I was about to say it. The directory database is built on a full-time editor or volunteer, after visiting a Web site, these editors write a description of the site and classify it as a predefined category based on the content and nature of the site, placing the URL and description of the site in this category, and when the user queries a keyword, Search software only searches in these descriptions. ”

"The directory's user interface is basically a hierarchical structure, the home page provides a basic number of major categories of access, users can go down at one level down until they find their interest in the category, in addition, users can also use the directory to provide search function directly to find a keyword, however, Because the directory is only searched in the description of the saved site, the dynamic changes in the site itself are not reflected in the search results, which is a big difference between the directory and the robot search engine. ”

"The last thing to talk about is Meta search engine, it is characterized by its own does not hold the Web page information database, when users query a keyword, it will be the user's query request to other search engines can accept the command format, and access to several search engines to query this keyword, and return the results of these search engines to the user after processing. For the returned results, the system will be repeatedly excluded, reordered, and so on. Service mode is web-oriented Full-text search. The advantage of this kind of search engine is that the amount of information that returns the result is bigger and more complete, the disadvantage is that users need to do more filtering. This kind of search engine's representative is WebCrawler, Infomarket and so on, the domestic sweep, the hurricane search pass and so on provides similar function. ”

"I really do not know that search engines have so many tricks, it is really a long experience." Meimei exclaimed.