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Evaluating information Searching for quality on the Web
Information need <ul><li>Need to know more about … </li></ul><ul><li>Want to use information on the web for class </li></u...
The Web <ul><li>Largest growing part of the Internet </li></ul><ul><li>Information of all sorts </li></ul><ul><ul><li>Stat...
How do I find information? <ul><li>Places to search for information </li></ul><ul><ul><li>Search engines </li></ul></ul><u...
Search engines <ul><li>Attempt to index the web </li></ul><ul><li>Require search techniques for good results </li></ul><ul...
<ul><li>AllTheWeb </li></ul><ul><li>AltaVista </li></ul><ul><li>Ask.com </li></ul><ul><li>Google </li></ul><ul><li>ChaCha ...
Directories <ul><li>Topic lists of selected resources </li></ul><ul><ul><li>Hierarchically arranged </li></ul></ul><ul><li...
Examples of directories <ul><li>Yahoo </li></ul><ul><li>Open Directory Project </li></ul><ul><li>World Wide Web Virtual Li...
Meta-search engines <ul><li>Search several search engines simultaneously </li></ul><ul><li>Good way to keep up with new se...
Examples of meta-search tools <ul><li>Ixquick </li></ul><ul><li>Metacrawler </li></ul><ul><li>Mamma </li></ul><ul><li>Ask....
Evaluating information <ul><li>Once you select the pages and sites you need to evaluate the information </li></ul><ul><li>...
Common criteria elements <ul><li>Authority </li></ul><ul><li>Content </li></ul><ul><li>Currency </li></ul><ul><li>Audience...
Authority <ul><li>Authority  </li></ul><ul><ul><li>Who is responsible for the site?  </li></ul></ul><ul><ul><li>Are the au...
Content <ul><li>Content   </li></ul><ul><ul><li>What is the purpose of the site?  </li></ul></ul><ul><ul><li>Is the text o...
Design <ul><li>Design   </li></ul><ul><ul><li>Is the site well-designed? Did the top page contain all the information you ...
Value <ul><li>Value   </li></ul><ul><ul><li>Did you learn anything?  </li></ul></ul><ul><ul><li>Was the page worth visitin...
Time <ul><li>Time   </li></ul><ul><ul><li>Does the material have a limited period of validity?  </li></ul></ul><ul><ul><li...
Other sources: Berkeley <ul><li>Evaluating Web Pages :  Techniques to Apply & Questions to Ask </li></ul><ul><ul><li>What ...
Other sources: Cornell <ul><li>Five criteria for evaluating Web pages </li></ul><ul><ul><li>Accuracy  </li></ul></ul><ul><...
John Hopkins University <ul><li>Evaluating Information Found on the Internet   </li></ul><ul><ul><li>Authorship </li></ul>...
Class rubric <ul><li>Basic information </li></ul>Date reviewed: Reviewer email: Browser(s) used: Date last updated: Site U...
Criteria and levels <ul><li>Each criteria element has 4 levels </li></ul><ul><ul><li>Authority  </li></ul></ul><ul><ul><li...
Writing your evaluation <ul><li>After filling out the rubric, write a review in narrative form </li></ul><ul><li>Point out...
On your marks… <ul><li>Prepared by </li></ul><ul><li>Iván E Calimano, Ph.D. Assistant Professor Graduate Studies Center In...
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Evaluating information on the web

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A basic presentation for evaluating resources on the web and what are search engines, directories and meta search engines

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  • Transcript of "Evaluating information on the web"

    1. 1. Evaluating information Searching for quality on the Web
    2. 2. Information need <ul><li>Need to know more about … </li></ul><ul><li>Want to use information on the web for class </li></ul><ul><li>Just curious about … </li></ul><ul><li>How I can find information on the web? </li></ul><ul><li>Other </li></ul>
    3. 3. The Web <ul><li>Largest growing part of the Internet </li></ul><ul><li>Information of all sorts </li></ul><ul><ul><li>Statistical information </li></ul></ul><ul><ul><li>Images, video, sound </li></ul></ul><ul><ul><li>Factual information </li></ul></ul><ul><ul><li>Company information </li></ul></ul><ul><ul><li>Full text (articles, books) </li></ul></ul><ul><ul><li>Popular culture </li></ul></ul><ul><ul><li>Etc. </li></ul></ul>
    4. 4. How do I find information? <ul><li>Places to search for information </li></ul><ul><ul><li>Search engines </li></ul></ul><ul><ul><li>Directories </li></ul></ul><ul><ul><li>Meta-search tools </li></ul></ul>
    5. 5. Search engines <ul><li>Attempt to index the web </li></ul><ul><li>Require search techniques for good results </li></ul><ul><li>Often used for multifaceted or obscure subjects </li></ul><ul><li>Large amount of information from different perspectives </li></ul><ul><li>Updated regularly </li></ul>
    6. 6. <ul><li>AllTheWeb </li></ul><ul><li>AltaVista </li></ul><ul><li>Ask.com </li></ul><ul><li>Google </li></ul><ul><li>ChaCha </li></ul><ul><li>Quintura </li></ul><ul><li>Hakia </li></ul>Examples of search engines
    7. 7. Directories <ul><li>Topic lists of selected resources </li></ul><ul><ul><li>Hierarchically arranged </li></ul></ul><ul><li>Resources evaluated carefully </li></ul><ul><li>Browsed or searched by keyword </li></ul><ul><li>Contain links to specialized databases </li></ul><ul><li>To get an overview of a topic </li></ul><ul><li>Facts such as population statistics </li></ul>
    8. 8. Examples of directories <ul><li>Yahoo </li></ul><ul><li>Open Directory Project </li></ul><ul><li>World Wide Web Virtual Library </li></ul><ul><li>Librarian’s Internet Index </li></ul><ul><li>About.com </li></ul>
    9. 9. Meta-search engines <ul><li>Search several search engines simultaneously </li></ul><ul><li>Good way to keep up with new search engines </li></ul><ul><li>Keep your search simple </li></ul>
    10. 10. Examples of meta-search tools <ul><li>Ixquick </li></ul><ul><li>Metacrawler </li></ul><ul><li>Mamma </li></ul><ul><li>Ask.com </li></ul><ul><li>Dogpile </li></ul><ul><li>Clusty </li></ul>
    11. 11. Evaluating information <ul><li>Once you select the pages and sites you need to evaluate the information </li></ul><ul><li>Information quality </li></ul><ul><li>Intuition and infer quality by clues </li></ul><ul><li>Prepare a rubric </li></ul><ul><li>Match your information with your objective </li></ul><ul><li>Read about the criteria elements </li></ul>
    12. 12. Common criteria elements <ul><li>Authority </li></ul><ul><li>Content </li></ul><ul><li>Currency </li></ul><ul><li>Audience </li></ul><ul><li>Accuracy </li></ul><ul><li>Design </li></ul><ul><li>Other </li></ul><ul><ul><li>Affiliation </li></ul></ul><ul><ul><li>Objectivity </li></ul></ul><ul><ul><li>Multiple intelligences </li></ul></ul><ul><ul><li>Time </li></ul></ul>
    13. 13. Authority <ul><li>Authority </li></ul><ul><ul><li>Who is responsible for the site? </li></ul></ul><ul><ul><li>Are the author and the author's status clearly indicated? </li></ul></ul><ul><ul><li>Is it a commercial, personal, governmental, or academic site? </li></ul></ul><ul><ul><li>The URL can tell you about the nature of the web site. </li></ul></ul><ul><ul><ul><li>Personal pages often contain the name of the web site's owner, or a description like users. </li></ul></ul></ul><ul><ul><ul><li>The domain name gives an indication of the web site's origin. </li></ul></ul></ul>
    14. 14. Content <ul><li>Content </li></ul><ul><ul><li>What is the purpose of the site? </li></ul></ul><ul><ul><li>Is the text of the site well-written? </li></ul></ul><ul><ul><li>Is the information of the site well-documented and accurate? </li></ul></ul><ul><ul><li>Does the site offer anything unique, or is it just more of the same? </li></ul></ul>
    15. 15. Design <ul><li>Design </li></ul><ul><ul><li>Is the site well-designed? Did the top page contain all the information you needed or could it easily be retrieved from another page of the site? </li></ul></ul><ul><ul><li>Are there any spelling or grammatical errors? </li></ul></ul><ul><ul><li>Do all the hypertext links work? </li></ul></ul><ul><ul><li>Are the graphics on the site page clear and useful, or do they just distract your attention? </li></ul></ul>
    16. 16. Value <ul><li>Value </li></ul><ul><ul><li>Did you learn anything? </li></ul></ul><ul><ul><li>Was the page worth visiting? </li></ul></ul><ul><ul><li>Would you include the site in your bookmark list? </li></ul></ul><ul><ul><li>How many other sites link to this web site? Using Google (Advanced search) you can find out. Choose Page-specific search and fill in the URL. AltaVista also offers this option. Fill in Link: followed by the URL. </li></ul></ul>
    17. 17. Time <ul><li>Time </li></ul><ul><ul><li>Does the material have a limited period of validity? </li></ul></ul><ul><ul><li>Is there an indication of the latest update of the page? </li></ul></ul><ul><ul><li>Is the page obsolete? </li></ul></ul>
    18. 18. Other sources: Berkeley <ul><li>Evaluating Web Pages : Techniques to Apply & Questions to Ask </li></ul><ul><ul><li>What can the URL tell you? </li></ul></ul><ul><ul><li>Who wrote the page? Is he, she, or the authoring institution a qualified authority? </li></ul></ul><ul><ul><li>Is it dated? Current, timely? </li></ul></ul><ul><ul><li>Is information cited authentic? </li></ul></ul><ul><ul><li>Does the page have overall integrity and reliability as a source? </li></ul></ul><ul><ul><li>What's the bias? </li></ul></ul><ul><ul><li>Could the page or site be ironic, like a satire or a spoof? </li></ul></ul><ul><ul><li>If you have questions or reservations, how can you satisfy them? </li></ul></ul>
    19. 19. Other sources: Cornell <ul><li>Five criteria for evaluating Web pages </li></ul><ul><ul><li>Accuracy </li></ul></ul><ul><ul><li>Authority </li></ul></ul><ul><ul><li>Currency </li></ul></ul><ul><ul><li>Objectivity </li></ul></ul><ul><ul><li>Coverage </li></ul></ul>
    20. 20. John Hopkins University <ul><li>Evaluating Information Found on the Internet </li></ul><ul><ul><li>Authorship </li></ul></ul><ul><ul><li>Publishing body </li></ul></ul><ul><ul><li>Point of view or bias </li></ul></ul><ul><ul><li>Referral to other sources </li></ul></ul><ul><ul><li>Verifiability </li></ul></ul><ul><ul><li>Currency </li></ul></ul><ul><ul><li>How to distinguish propaganda, misinformation and disinformation </li></ul></ul><ul><ul><li>The mechanics of determining authorship, publishing body, and currency on the Internet </li></ul></ul>
    21. 21. Class rubric <ul><li>Basic information </li></ul>Date reviewed: Reviewer email: Browser(s) used: Date last updated: Site URL: http:// Title of site/page:
    22. 22. Criteria and levels <ul><li>Each criteria element has 4 levels </li></ul><ul><ul><li>Authority </li></ul></ul><ul><ul><li>Affiliation </li></ul></ul><ul><ul><li>Purpose </li></ul></ul><ul><ul><li>Objectivity </li></ul></ul><ul><ul><li>Audience </li></ul></ul><ul><ul><li>Currency </li></ul></ul><ul><ul><li>Content </li></ul></ul><ul><ul><li>Accuracy </li></ul></ul><ul><ul><li>Web Site Design </li></ul></ul><ul><ul><li>Multiple intelligences </li></ul></ul>
    23. 23. Writing your evaluation <ul><li>After filling out the rubric, write a review in narrative form </li></ul><ul><li>Point out the positive aspects as well as the negatives </li></ul><ul><li>Conclude your review with a recommendation for grade, curricular area, and possible lessons </li></ul>
    24. 24. On your marks… <ul><li>Prepared by </li></ul><ul><li>Iván E Calimano, Ph.D. Assistant Professor Graduate Studies Center Interamerican University San Germán, PR </li></ul><ul><li>[email_address] </li></ul>
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