1hr Research And Thinking

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PPT for Presentation on Accessing and Evaluating Web-based Resources

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  • 1hr Research And Thinking

    1. 1. Research and Thinking for the 21 st Century Going Beyond G o o g l e
    2. 2. Topics <ul><li>What makes Google great (Meta search engines) </li></ul><ul><li>Beyond Google </li></ul><ul><li>Differentiated Searching </li></ul><ul><li>Evaluating web resources </li></ul>
    3. 3. What Makes G o o g l e Great LINK <ul><li>Breadth & depth </li></ul><ul><li>Ranking technology </li></ul><ul><li>12 file formats </li></ul><ul><li>Cached pages </li></ul><ul><li>Advanced searching </li></ul><ul><li>Toolbar </li></ul><ul><li>Images </li></ul><ul><li>News </li></ul><ul><li>Viewer </li></ul>
    4. 4. Beyond G o o g l e : Meta Search Engines <ul><li>Do not crawl the web themselves to build databases </li></ul><ul><li>Allow users to search multiple Search Engines at one time with one search </li></ul><ul><li>Present results from various Search Engines together on one page </li></ul><ul><li>Maximize coverage </li></ul><ul><li>Clustering </li></ul>
    5. 5. Google and Yahoo compared http://www.langreiter.com/exec/yahoo-vs-google.html
    6. 6. http:www.dogpile.com
    7. 7. http://clusty.com
    8. 8. http://www.zuula.com/
    9. 9. http://www.gigablast.com/
    10. 10. Visual Search
    11. 11. http://www.quintura.com/
    12. 12. http://redz.com/
    13. 13. http://www.search-cube.com/
    14. 14. http://www.viewzi.com/
    15. 15. http://search.spacetime.com/
    16. 16. www.dmoz.org
    17. 17. Choosing the Best Search <ul><li>NoodleTools </li></ul><ul><ul><li>http://www.noodletools.com/debbie/literacies/information/5locate/adviceengine.html </li></ul></ul><ul><ul><ul><li>Great chart that connects the information need to the search strategy </li></ul></ul></ul>
    18. 18. Assessing the Quality of Information on the Internet
    19. 19. Dilbert on Critical Thinking
    20. 20. CRITICAL EVALUATION Why Evaluate What You Find on the Web? <ul><li>Anyone can put up a Web page </li></ul><ul><ul><li>about anything </li></ul></ul><ul><li>Many pages not kept up-to-date </li></ul><ul><li>No quality control </li></ul><ul><ul><li>most sites not “peer-reviewed” </li></ul></ul><ul><ul><ul><li>less trustworthy than scholarly publications </li></ul></ul></ul><ul><ul><li>no selection guidelines for search engines </li></ul></ul>
    21. 21. Web Evaluation Techniques Scan the perimeter of the page <ul><li>Can you tell who wrote it ? </li></ul><ul><ul><ul><li>name of page author </li></ul></ul></ul><ul><ul><ul><li>organization, institution, agency you recognize </li></ul></ul></ul><ul><ul><ul><li>e-mail contact by itself not enough </li></ul></ul></ul><ul><li>Credentials for the subject matter ? </li></ul><ul><ul><li>Look for links to: </li></ul></ul><ul><ul><li>“ About us” “Philosophy” “Background” “Biography” </li></ul></ul><ul><li>Is it recent or current enough ? </li></ul><ul><ul><ul><li>Look for “last updated” date - usually at bottom </li></ul></ul></ul>
    22. 22. Web Evaluation Techniques Indicators of quality <ul><li>Sources documented </li></ul><ul><ul><ul><li>links, footnotes, etc. </li></ul></ul></ul><ul><ul><ul><ul><li>As detailed as you expect in print publications ? </li></ul></ul></ul></ul><ul><ul><ul><li>do the links work ? </li></ul></ul></ul><ul><li>Information retyped or forged </li></ul><ul><ul><ul><li>why not a link to published version instead ? </li></ul></ul></ul><ul><li>Links to other resources </li></ul><ul><ul><ul><li>biased, slanted ? </li></ul></ul></ul>
    23. 23. Web Evaluation Techniques What Do Others Say ? <ul><li>Search the URL in alexa.com </li></ul><ul><ul><li>Who links to the site? Who owns the domain? </li></ul></ul><ul><ul><li>Type or paste the URL into the basic search box </li></ul></ul><ul><ul><li>Traffic for top 100,000 sites </li></ul></ul><ul><li>See what links are Similar pages </li></ul><ul><li>Look up the page author </li></ul>
    24. 24. Web Evaluation Techniques STEP BACK & ASK: Does it all add up ? <ul><li>Why was the page put on the Web ? </li></ul><ul><ul><ul><li>inform with facts and data? </li></ul></ul></ul><ul><ul><ul><li>explain, persuade? </li></ul></ul></ul><ul><ul><ul><li>sell, entice? </li></ul></ul></ul><ul><ul><ul><li>share, disclose? </li></ul></ul></ul><ul><ul><ul><li>as a parody or satire? </li></ul></ul></ul><ul><li>Is it appropriate for your purpose? </li></ul>
    25. 25. Let’s a Take Look <ul><li>Dihydrogen Monoxide Sounds like a very dangerous chemical indeed. It's actually H2O, but if you're not of a scientific mind this site will get you every time. </li></ul>
    26. 26. <ul><li>Save the Tree Octopus Very well put together site and perfectly believable. </li></ul><ul><li>RYT Hospital Well put together website, linking into a number of other spoof sites, and from a quick view looks entirely bono fide. </li></ul><ul><li>The Ova Prima Foundation This site has scientific 'proof' that the egg came first. Very well done, with todays date, various sections and very academic looking. </li></ul>
    27. 27. Fake Sites <ul><li>The Centaur Excavations Very well done, with photographs, created in a good academic style with an .edu domain. Actually explaining a hoax, but from a quick look it's easy to be fooled. </li></ul><ul><li>Clones R Us Providing information on their 'cloning' operation for human beings. FAQ, price list, testimonials. Quite slick and professionally put together, though the price list is a giveaway. </li></ul><ul><li>Save the Guinea Worm Well put together site, very credible, but the URL gives the game away. </li></ul>
    28. 28. Fake Sites <ul><li>Online Pregnancy Test This shouldn't really fool people, but I suspect that it does. You may need to try and be scanned twice to confirm that you are actually pregnant. </li></ul><ul><li>People for the Ethical Treatment of Algae The title says it all. It's not particularly well done, in that there isn't a great deal of information there, and it's quite a basic site. </li></ul><ul><li>Petrol Direct Buy your petrol direct and have it delivered. It sounds like a sensible deal. </li></ul>
    29. 29. Fake Sites <ul><li>Baby cages Infant confinement specialists since 2001. This is one of those 'it's probably not true... is it?' sites that you can't be absolutely sure about. Dehydrated water A commercial website selling dehydrated water. Very well put together. </li></ul><ul><li>Free electricity project Campaign for free electricity. Very busy, and while it's well done I think it's a bit too over the top to be entirely believable. </li></ul>
    30. 30. Exercises <ul><li>1) Find the Bureau of Labor Statistics (BLS) Inflation Calculator and discover what the buying power of $100 spend in 1948 would be today. </li></ul><ul><li>2) Find a site that will allow you to see when the sun will be rising and setting in Monterey on June 13, 2009. Check Baghdad while you are there. </li></ul><ul><li>3) Where would you go to find out who owns the G o o g l e trademark name and when they got it? </li></ul>
    31. 31. Exercise Answers <ul><li>1) BLS Inflation Calculator -- http://www.bls.gov/cpi/ </li></ul><ul><li>2) U.S. Naval Observatory Sun Rise and Sun Set data http://aa.usno.navy.mil/data/docs/RS_OneDay.html </li></ul><ul><li>3) US Patent and Trademark Office Trademark Electronic Search System (TESS) http://tess2.uspto.gov/bin/gate.exe?f=login&p_lang=english&p_d=trmk </li></ul>
    32. 32. Exercises <ul><li>4) Where would you go to find a map showing real time earthquake data? </li></ul><ul><li>5) Where can you go to find the number and types of missiles China has transferred and to which countries since 1950? </li></ul><ul><li>6) You’re getting ready to deploy to Japan, how can you find out what the Yen is currently worth according to the Feds? </li></ul>
    33. 33. Exercise Answers (2) <ul><li>4) USGS Earthquake Website [with maps of recent activity] http://earthquake.usgs.gov/ </li></ul><ul><li>5) SIPRI Arms Transfers Database </li></ul><ul><li>http://armstrade.sipri.org/ </li></ul><ul><li>6) Federal Reserve Board Foreign Exchange Rates [updated daily] http://www.federalreserve.gov/releases/h10/update/ </li></ul>

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