Search engines is a program that searches a database of Web Pages for words that you supply and...
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HOW TO DO USE SEARCH ENGINES
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SEARCH ENGINES• Search engines is a program that searches a database of
Web Pages for words that you supply and then lists hyperlinks to a page that contain those words.
• Examples include;
• Google, Bing, Yahoo, AltaVista, cuil, Excite, Go.com, AllTheWeb, Galaxy, search.aol, LiveSearch, Lycos, GigaBlast, AlexaInternet, HotBot, Excite, Snap, Ask Jeeves, Go Network, GoTo, WebCrawler, About, Looksmart,
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SEARCH ENGINES CONT…• Two Common problems in searching the Web are;• Search engines usually return many more hyperlinks than it
is possible to access with many of the hyperlinks containing unrelated information.
• Different search engines find different pages because each engine has its own database of hyperlinks and its own method of determining a match.
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SUBJECT TREE OR INTERNET GUIDE• Some search provide a list of sites separated into
categories
• Yahoo uses this feature
• (i.e. Art & Humanities
• – News & Media
• – Business & Economy
• – Recreation & Sports)
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ADVANCED SEARCH TECHNIQUES• Boolean Logic• Listing hawaii in the AltaVista search engine return
2,000,000 matches,
• but the criteria hawaii + resort lowers the number to 300,000.
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ADVANCED SEARCH TECHNIQUES• The “+” (Plus Sign)• Can be used to limit a search to only those web pages
containing those two words.
• It is possible to use more than one + To refine a search i.e. florida+hotel+pool
• Returns only web sites containing those three words
• (NOTE): don’t use a space between the + and the next word
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ADVANCED SEARCH TECHNIQUES• You can also use the word “and” in place of the + (plus
sign)
• A common search technique is to use several synonyms for a word (i.e. house cottage bungalow)• or
• The word “or” can be used in place of a space
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ADVANCED SEARCH TECHNIQUES• - (minus sign) is used to exclude unwanted web pages.• i.e. Shakespeare – play Returns hyperlinks to pages
containing the word Shakespeare, but eliminates pages that also contain the word “play”.
• not• Can be used in place of the – (minus sign)
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ADVANCED SEARCH TECHNIQUES• Examples:
• horse+buggy-carriage• tuna salmon-salad• recipe chicken-soup• university+connecticut-yale