Almost all the search information on the Internet will be familiar with Yahoo. If Internet users want to find the address of a website or information on the Internet, most of these users will find it in Yahoo. Yahoo! Is one search engine on the Internet that serve the search information and any data you want the Searcher. But most of these users do not know when and the origin of the search engines. This article attempts to provide information on the history of search engines, the kinds of search engines and some recommendations of some search engines that are still active today. The development of search engines came from Montreal when lan Emtage make Archie. Grandfather of all search engines are Archie created by Alan Emtage in 1990, students from McGill University, Montreal. Then the University of Nevada System Computing Service Group is building a search engine type that is named Veronica, 1993.
Search service is a grandmother of search engine. Then Matthew Gray's World Wide Web Wanderer was the mother of all search engines. The Wanderer was the first robot on the web. Then Martijn Koster created Aliweb in October 1993. Http Aliweb is the same as archie.Search service is still using a list of list of each of the information that they do.
December 1993, the three search engines that use robot programs that is issued Jumpstation, WWW Worm and The Repository-based Software Engineering (RBSE) Spider. Then six undergraduates from Stanford University to start a development project search engine called Excite, February 1993. Excite was originally named Architext and only in the form of a software for webmasters for use on their website. Then came Yahoo, a search engine that is very famous now. In the wake of two people doctoral candidate from Stanford University, David Filo and Jerry Yang. Then followed Lycos, which is a project from a lab in Carnigie Mellon University, July 1994, by Michael Maudlin. Altavista is issued in December 1995 by Digital Equipment Corporation's (DEC). and lastly, Hotbot built May 20, 1996 and is the product output Inkomotomi Corporation which was founded by Eric Brewer and Paul Gauthier of the University of California, Berkeley.
Further development is meta-search engines. Meta-search engine that combines the first and Metacrawler
take resources from Lycos, Altavista, Yahoo, Excite, WebCrawler and Infoseek. Built 1995 by Eric Selburg, a student master's from University of Washington.
Working methods of the search engines are generally divided into two parts, namely human-powered directories and crawler-based search engines. As an example of human-powered directories are Yahoo!. Human-powered directories are the first and oldest methods of search engine or often called the index and catalog methods. The workings of this method is the administrators or editors gather alamatalamat web into the different directories that match. Changes made on the website would not change the information in directory search engine. This method has the advantage when looking for general information and are often sought to direct people and seekers go to the directory that match he wants. The drawback, it is very hard to find more specific information and no trend, other than that very often the information provided is not actual because the directory can not directly inform developments in website.
Some search engine services using a program called robots, crawlers, or spiders. This method is entered into the Crawler-Based Search Engine. An example of a crawler-based search engines are Hotbot. The workings of this method consists of three essential parts. First by doing a "crawl" and "spies", they will record and will be doing his job back about two or three months to monitor changes. Then the second part is the indexing, all data obtained results from the first activity the index in the appropriate directory. Changes from the first activity will change the indexing. Then the third step is use a search engine software to record and clasification index data in accordance with the demand of visitors. The advantage of this method is more actual information displayed and quick. While the shortcomings, because it still uses text analysis system, then program the robot is not able to handle problems associated with the words homonym, synonym,plural and conjugation. So sometimes the search results will be widened and not in accordance with desired by the seeker of information.
In accordance with the development of the era, most search engines today use both this type and is called a hybrid search engine. Search engines are classified in this category is called meta-search engines. As an example of this type such as Google. Working system of this method is that they look for the files or web address is needed from the search engine other search engines. After that, search engines that use this method took this result and display it. Meta search engine that will do the job well
sorting the data obtained prior to display them, so no duplicate data. Some advantages of the model
These are users will find information more complete and accurate, and more get the selected sources.
Shortcomings, most search engines running slow because they search longer to several search engines that exist.
Search engine-popular search engine is often called major search engines, it is because of the large number of visitors who utilize search engines. Much of what lies behind a search engine became major search engines, for example has a function A good search, quick search, the actuality of info and accuracy of the information and support functions such as e-mail, newsgroups,address book and others. Some search engines who recommended its use in accordance with specific functions and usability held are as follows:
No comments:
Post a Comment