HOW TO DO USE SEARCH ENGINES SEARCH ENGINES
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HOW TO DO USE SEARCH ENGINES
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, Alta. Vista, cuil, Excite, Go. com, All. The. Web, Galaxy, search. aol, Live. Search, Lycos, Giga. Blast, Alexa. Internet, Hot. Bot, Excite, Snap, Ask Jeeves, Go Network, Go. To, Web. Crawler, About, Looksmart,
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.
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)
ADVANCED SEARCH TECHNIQUES • Boolean Logic • Listing hawaii in the Alta. Vista search engine return 2, 000 matches, • but the criteria hawaii + resort lowers the number to 300, 000.
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
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
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)
ADVANCED SEARCH TECHNIQUES • Examples: • horse+buggy-carriage • tuna salmon-salad • recipe chicken-soup • university+connecticut-yale
