Friday, March 23, 2012

How to Search on Search Engine..?

Before doing a search, it's important to define your topic as completely and succinctly as possible. Write down exactly what information you're looking for, why you're looking for it, and what you're not looking for. This will help you to discover the best keywords for your search.

Keywords

With the exception of search engines such as AskJeeves.com, which will take questions in the form of actual queries, most work best if you provide them with several keywords. So how do you determine which keywords will work best?
Most users submit 1.5 keywords per search, which is not enough for an effective query - the recommended maximum is 6 to 8 carefully chosen words, preferably nouns and objects. (Search engines consider articles and pronouns clutter.) Avoid verbs, and use modifiers only when they help to define your object more precisely - as in "feta cheese" rather than just "cheese."
Now you have your keywords. How do you enter them into the search engine?

Use of Phrases

Your most powerful keyword combination is the phrase. Phrases are combinations of two or more words that must be found in the documents you're searching for in the EXACT order shown. You enter a phrase - such as "feta cheese" - into a search engine, within quotation marks.
Some searches provide specific options for phrases, while others don't allow them at all; but most will allow you to enter a phrase in quotation marks. Check the "Help" files of the search engine you're using to be sure what it accepts.

Punctuation and Capitalization

Most search engines are insensitive to case: you can type your queries in uppercase, lowercase, or a mix of cases. If you use lowercase, most engines will match on both upper and lower case; so for general searches, lowercase is the safest form to use.
Not all search engines handle punctuation the same way. When in doubt, consult the "Help" file.

Boolean Basics

"Boolean" searching (named after George Boole, the 19th-century mathematician who founded the field of symbolic logic) is a powerful technique that can narrow your search to a reasonable number of results, and increase the chance of those results being useful. Boolean searches are simple to learn and tremendously effective. The three most commonly used Boolean commands (or "operators") are AND, OR and AND NOT.

AND means "I want only documents that contain both/all words." For instance, the search "London" AND "Big Ben" AND "Buckingham Palace" AND "Trafalgar Square" would return only documents that contained all four keywords or phrases. AND is the most frequently used Boolean command.

OR means "I want documents that contain either word; I don't care which." The query "London" OR "Big Ben" OR "Buckingham Palace" OR "Trafalgar Square" would return all documents that contained even one of these four keywords or phrases. Use OR to string together synonyms; be careful about mixing it with AND.

AND NOT means "I want documents that contain this word, but not if the document also contains another word." The query "London" AND "Big Ben" AND NOT "Buckingham Palace" would return documents that include London and Big Ben, but not those that also include Buckingham Palace. Remember that AND NOT only applies to the word or phrase that immediately follows it.
Most search engines support the AND NOT command.  It is sometimes called BUT NOT or NOT, and is sometimes indicated by placing a minus sign (-) before the term or phrase to be removed.  (Check the search tips of the engine you're using to see which form of AND NOT it accepts). Before you apply AND NOT, see what results you get from a simpler search. AND NOT is a great way to weed out results you don't want, such as pornography.

Quick Tips
  • Use nouns as query keywords. Never use articles ("a," "the"), pronouns ("he," "it"), conjunctions ("and," "or") or prepositions ("to," "from") in your queries
  • Use 6 to 8 keywords per query
  • Where possible, combine keywords into phrases by using quotation marks, as in "solar system"
  • Spell carefully, and consider alternate spellings
  • Avoid redundant terms
  • Check the "Help" function of the particular search engine you're using, since they all have their own quirks and preferences

Thursday, March 22, 2012

what is search engine?

A search engine is a sort of a page that shows the list of all the web sites along with the information on it. This service had been every popularly used among people and at time the search engine is also not able to provide people with effective results. It had been found out that the search engine is of greater benefit to the people and majority of the people had been utilizing it as a source of getting quality information.
For the search engine activity it is highly recommended that the person had to enter the keywords in the search box which as a results provides the person with a list of all the documents and pages which are relevant to the keyword that had been searched. 

It must be made sure that the entire data on the search engine can be accessed by the people when they enter a particular keyword for certain results. When the results are easily accessed on the search engine, the serach engine with positive views and points is ranked on the top most positions.  Google, LycosAsk, yahoo, Jeeves, Look Smart, Alta Vista, are the most widely used search engines where people can get a larger range of information. The entire information gathers from all the search engines is quite helpful and hence many benefits can also be generated through it. Through search engine people can get their products marketed easily and at time on the search engine, people make money too. The money is earned each time the person clicks the specific website. Mostly through search engines, the internet marketing activity is being carried out. The main aim for the creation of the search engines is the customer need.
Mainly the search engine companies are always aware of their customer needs so they try to place certain important information on the beginning information but at time the most important information from the company view point is not at all effective and useful for the people.

History
During the early development of the web, there was a list of webservers edited by Tim Berners-Lee and hosted on the CERN webserver. One historical snapshot from 1992 remains.[1] As more webservers went online the central list could not keep up. On the NCSA site new servers were announced under the title "What's New!"[2]
The very first tool used for searching on the Internet was Archie.[3] The name stands for "archive" without the "v". It was created in 1990 by Alan Emtage, Bill Heelan and J. Peter Deutsch, computer science students at McGill University in Montreal. The program downloaded the directory listings of all the files located on public anonymous FTP (File Transfer Protocol) sites, creating a searchable database of file names; however, Archie did not index the contents of these sites since the amount of data was so limited it could be readily searched manually.
The rise of Gopher (created in 1991 by Mark McCahill at the University of Minnesota) led to two new search programs, Veronica and Jughead. Like Archie, they searched the file names and titles stored in Gopher index systems. Veronica (Very Easy Rodent-Oriented Net-wide Index toComputerized Archives) provided a keyword search of most Gopher menu titles in the entire Gopher listings. Jughead (Jonzy's Universal GopherHierarchy Excavation And Display) was a tool for obtaining menu information from specific Gopher servers. While the name of the search engine "Archie" was not a reference to the Archie comic book series, "Veronica" and "Jughead" are characters in the series, thus referencing their predecessor.
In the summer of 1993, no search engine existed yet for the web, though numerous specialized catalogues were maintained by hand. Oscar Nierstrasz at the University of Geneva wrote a series of Perl scripts that would periodically mirror these pages and rewrite them into a standard format which formed the basis for W3Catalog, the web's first primitive search engine, released on September 2, 1993.[4]
In June 1993, Matthew Gray, then at MIT, produced what was probably the first web robot, the Perl-based World Wide Web Wanderer, and used it to generate an index called 'Wandex'. The purpose of the Wanderer was to measure the size of the World Wide Web, which it did until late 1995. The web's second search engine Aliweb appeared in November 1993. Aliweb did not use a web robot, but instead depended on being notified by website administrators of the existence at each site of an index file in a particular format.
JumpStation (released in December 1993[5]) used a web robot to find web pages and to build its index, and used a web form as the interface to its query program. It was thus the first WWW resource-discovery tool to combine the three essential features of a web search engine (crawling, indexing, and searching) as described below. Because of the limited resources available on the platform on which it ran, its indexing and hence searching were limited to the titles and headings found in the web pages the crawler encountered.
One of the first "full text" crawler-based search engines was WebCrawler, which came out in 1994. Unlike its predecessors, it let users search for any word in any webpage, which has become the standard for all major search engines since. It was also the first one to be widely known by the public. Also in 1994, Lycos (which started at Carnegie Mellon University) was launched and became a major commercial endeavor.
Soon after, many search engines appeared and vied for popularity. These included Magellan, Excite, Infoseek, Inktomi, Northern Light, andAltaVista. Yahoo! was among the most popular ways for people to find web pages of interest, but its search function operated on its web directory, rather than full-text copies of web pages. Information seekers could also browse the directory instead of doing a keyword-based search.
In 1996, Netscape was looking to give a single search engine an exclusive deal to be the featured search engine on Netscape's web browser. There was so much interest that instead a deal was struck with Netscape by five of the major search engines, where for $5 million per year each search engine would be in rotation on the Netscape search engine page. The five engines were Yahoo!, Magellan, Lycos, Infoseek, and Excite.[6][7]
Search engines were also known as some of the brightest stars in the Internet investing frenzy that occurred in the late 1990s.[8] Several companies entered the market spectacularly, receiving record gains during their initial public offerings. Some have taken down their public search engine, and are marketing enterprise-only editions, such as Northern Light. Many search engine companies were caught up in the dot-com bubble, a speculation-driven market boom that peaked in 1999 and ended in 2001.
Around 2000, Google's search engine rose to prominence.[citation needed] The company achieved better results for many searches with an innovation called PageRank. This iterative algorithm ranks web pages based on the number and PageRank of other web sites and pages that link there, on the premise that good or desirable pages are linked to more than others. Google also maintained a minimalist interface to its search engine. In contrast, many of its competitors embedded a search engine in a web portal.
By 2000, Yahoo! was providing search services based on Inktomi's search engine. Yahoo! acquired Inktomi in 2002, and Overture (which ownedAlltheWeb and AltaVista) in 2003. Yahoo! switched to Google's search engine until 2004, when it launched its own search engine based on the combined technologies of its acquisitions.
Microsoft first launched MSN Search in the fall of 1998 using search results from Inktomi. In early 1999 the site began to display listings fromLooksmart blended with results from Inktomi except for a short time in 1999 when results from AltaVista were used instead. In 2004, Microsoftbegan a transition to its own search technology, powered by its own web crawler (called msnbot).
Microsoft's rebranded search engine, Bing, was launched on June 1, 2009. On July 29, 2009, Yahoo! and Microsoft finalized a deal in whichYahoo! Search would be powered by Microsoft Bing technology.