Searchtools Strategy
Information Need Strategy Keyword search Keyword search with refinements Excite , HotBot , FAST , SurfWax , AltaVista Broad academic subject Librarians'Index to the Internet, Infomine, NorthernLight, Encyclopedia Britannica, Encarta Popular or Commercial Topic Yahoo! , dmoz , Go Subject Expert About.com, WWWVirtualLibrary, ArgusClearinghouse, AlphaSearch Pinpoint phrase search AltaVista Proper name, case sensitive InfoSeek , AltaVista, HotBot Biographical Biography.com, BiographicalDictionary, Lives Government FirstGov News Yahoo! News , NorthernLightCurrentNews, Moreover Automatic Search Informant, NorthernLightSearchAlertService Almanac Information InformationPlease, CIAWorldFactBook Map TIGERMapService, MapMachine, MapQuest
Search Engine Mathematics
Since search engines work on keywords, the words a user submits are going to be the most important criterion of what the engine returns. The submission of that key word, or group of words or phrase is crucial. The best tactic to use will depend on the nature of your search, and the capabilities of the engine you are submitting to.The '+' sign is the most commonly used operator. It tells the search engine to produce only documents which contain all the words of your search. For instance if you were to submit 'vanilla + fudge + sundae', the engine would return only documents which had all of those words, as opposed to returning all articles with 'vanilla', all articles with 'fudge', and all articles referring to 'sundae', which would result from a submission of those words without the plusses.
The '-' sign, conversely, is a restrictor operator. The term 'vanilla +fudge -sundae' would return all articles referring to vanilla and fudge, but which did not mention sundae.
To get a specific phrase, enclose it in quotes. A submission of "100 years war" would return articles mentioning only that specific war.
Here's a table summarizing the math capabilities of the most popular search engines.
SearchTool Match Any Match All Exclude Include PhraseAOL Search Menu Auto - + " "AltaVista Auto + - + " "Ask Jeeves   + - + " "Direct Hit   + - + " "Excite Auto + - + " "FAST Search   + - + " "Go / Infoseek Auto + - + " "GoTo Auto + - + " " No Auto - + " "HotBot Menu Auto - + " "IWon   + - + " "Inktomi   + - + " "LookSmart Auto       " "Lycos Menu Auto - + " "MSN Search Menu Auto - + " "NBCi   + - + " "Netscape Search Auto + - + " "Northern Light OR Auto - + " "Open Directory   + - + " "Raging Search   + - + " "RealNames     - + " "WebCrawler Auto + - + " "Yahoo! Auto + - + " "
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