 Search Engine Search Engine  Steps to Search for webpages pertaining to a specific information Steps to Search for webpages pertaining to a specific.

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Presentation transcript:

 Search Engine Search Engine  Steps to Search for webpages pertaining to a specific information Steps to Search for webpages pertaining to a specific information  Search on the Web Search on the Web  Search Engines as Info Gatekeepers Search Engines as Info Gatekeepers  Search Engine Wars Search Engine Wars  Different Search Engines Different Search Engines  Statistics from search engine logs Statistics from search engine logs

 A Search Engine is a Software that searches through a database of web pages on the web for particular information.  There are many search enginesavailable on the web,but searching process is same on almost all search engines.  Some examples of search engine are: BACK

 Firstly type the URL of the search engine in the address bar of the browser and press enter key.  For Example:  Web browser displays the home page of the search engine BACK

Mechanics of a typical search

Category of first result

Result for phrase query BACK

 Goal: Retrieve high quality results relevant to the user’s need  Need ◦ Informational – want to learn about something ◦ Navigational – want to go to that page ◦ Transactional – want to do something (web-mediated)  Access a service  Downloads  Shop ◦ Gray areas  Find a good hub BACK

 Search engines are becoming the primary entry point for discovering web pages.  Ranking of web pages influences which pages users will view.  The privacy policy of a search engine is important. BACK

 The competition is good news for users.  advertising is combined with search results. BACK

 probably the best known brand on the web.  Started off as a web directory service in 1994, acquired leading search engine technology in  Has very strong advertising and e-commerce partners

 Verb “google” has become synonymous with searching for information on the web.  Has raised the bar on search quality  Has been the most popular search engine in the last few years.  Had a very successful IPO in August  Is innovative and dynamic.

 Synonymous with PC software.  Remember its victory in the browser wars with Netscape.  Developed its own search engine technology only recently, officially launched in Feb  May link web search into its next version of Windows.

 Specialises in natural language question answering.  Search driven by Teoma. Teoma BACK

Statistic (Year) AltaVista (1998) AlltheWeb (2002) Excite (2001) average terms per query average queries per session average result pages viewed usage of advanced search features 20.4%1.0%10.0% BACK

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