Search engines & effective searching on the web


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Search engines & effective searching on the web

  1. 1. Search Engines & Effective Searching On The Web<br />
  2. 2. Search EnginevsDatabase<br />Database…The information comes from books, magazines, journals etc. which have gone through a review process. <br />Search engines…They find information on the internet. There is not a review process. You make the judgment whether the information is valid and accurate.<br />
  3. 3. Search Engines How do they work?<br />Search engines use a “spider” or “robot” to crawl through the WWW to find websites that contain keywords or phrases<br />
  4. 4. How do I begin and effective search?<br />Identify keywords of your topic<br />For example :<br />Katy Tigers<br />
  5. 5. Boolean searching<br />Use AND to narrow search<br />Katy AND Tigers<br />It only return pages that have both words<br />
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  7. 7. Boolean Or<br />Katy OR Tigers<br />This will return pages that have at least one of these words on the page. <br />This will expand your search. <br />
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  9. 9. Boolean NOT -<br />This tells the search engine to retrieve one keyword but not the other word.<br />For Example:<br />Dolphins NOT Miami<br /> Dolphins –Miami <br />
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  12. 12. Phrase Searching<br />Surround groups of words with quotation marks to tell the search engine to retrieve documents in which those words appear side by side. <br />For example :<br /> “global warming”<br />
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  14. 14. Title searching<br />This tells the search engine to only return web pages that have the phrase in the title.<br />Title: “Global warming”<br />
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  16. 16. Plural Forms, Capital letters<br />Most search engines interpret lowercase as either uppercase or lowercase. <br />Limit your results by using uppercase letters. <br />Most search engine interpret singular keywords as singular or plural. <br />Limit results by using plural forms of words. <br />
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  18. 18. Domain Searching<br />This will allow you to limit results to certain domains such as websites from the United Kingdom (.uk), educational institutions (.edu) or government sites (gov.)<br />
  19. 19. Current domains in the US<br />.com = a commercial business<br />.edu = and educational institution<br />.gov = a governmental institution<br />.org = a non-profit organization<br />.mil = a military site<br />.net = a network site<br />
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  21. 21. Other advanced operators<br />Site: search only one website<br />example:<br />
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  23. 23. Link<br />Use this to find linked pages to your website.<br /><br />
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  25. 25. Information about a page<br /><br />If you want to find out more information about the web site. <br />
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  27. 27. Synonyms <br />If you want information on both your keyword and its synonyms<br />~auto synonyms would be truck, car etc. <br />
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  29. 29. Use web sources with caution<br />Internet sites are created for a variety of reasons<br />Sell products<br />Provide services<br />Advertise <br />Provide information<br />To persuade<br />To share interests and ideas<br />
  30. 30. Remember<br />Anyone can publish anything on the web and much of that information is inaccurate and biased. <br />
  31. 31. Check out these sites<br />Museum of Hoaxes<br />California Velcro farms<br />Tree octopus<br />Brain protectors<br />Digital photography<br />Dog Island<br />