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Google is not enough




                Fall 2009, Class 2
                Prof. Scott Moore




          http://www.how...
Finding information
 can be frustrating.
You search
in your job
search, for
classes, for
   personal
   reasons.
Lots more information available now.
And lots more
technology
(hardware and
software), too.
Knowledge is
now the ability
to learn and the
ability to find
Tools are evolving for specialized needs.
Multiple tools
are needed to
meet your
diverse and
changing needs
The changing context
         of search is
          driving the
            need for
          new tools.
Changing operating context

         Then   Now
Changing operating context

         Then    Now

       Experts   You & me
Changing operating context

                Then    Now

             Experts    You & me

 Well-defined queries   Ill-def...
Changing operating context

                  Then    Now

               Experts    You & me

   Well-defined queries   I...
Understanding
search engines
will help you be a
better searcher.
Search tools can have several functions

                           Search tools




s




s
Search tools can have several functions

                                  Search tools
              generate



      Qu...
Search tools can have several functions

                                    Search tools
              generate
         ...
Search tools can have several functions

                                      Search tools
              generate
       ...
Categorizing search engines
Categorizing search engines
                 Query terms
Categorizing search engines
                 Query terms
                and
Categorizing search engines
                 Query terms
                and



                          or
Categorizing search engines
                               Query terms
                              and



              ...
Categorizing search engines
 Indexed information                Query terms
                                   and



    ...
Categorizing search engines
      Indexed information                Query terms
                                        a...
Categorizing search engines
      Indexed information                     Query terms
                                    ...
*
                    +
                              ~
                         -
Different search        not
           ...
Evaluating a search engine’s performance
Evaluating a search engine’s performance



     Relevant
Evaluating a search engine’s performance



                           Retrieved
Evaluating a search engine’s performance



     Relevant              Retrieved
Evaluating a search engine’s performance



     Relevant               Retrieved

                    B   C
             ...
Evaluating a search engine’s performance



     Relevant                   Retrieved

                        B   C
     ...
Evaluating a search engine’s performance



            Relevant                   Retrieved

                            ...
Evaluating a search engine’s performance



            Relevant                           Retrieved

                    ...
Evaluating a search engine’s performance



            Relevant                            Retrieved

                   ...
Evaluating a search engine’s performance



            Relevant                            Retrieved

                   ...
We can
understand search
engines even
better if we think
about the process
of searching.
Deconstructing the search experience



                                    Search
              Query
                   ...
Deconstructing the search experience

    Variety & usefulness
      of special queries

Automation                       ...
Deconstructing the search experience

       Variety & usefulness
         of special queries

 Automation                ...
Deconstructing the search experience

       Variety & usefulness
         of special queries

 Automation                ...
Deconstructing the search experience

       Variety & usefulness
         of special queries

 Automation                ...
Deconstructing the search experience

       Variety & usefulness                                    Quality of
         o...
Considering: Google

Indexed information Query terms default   Search target


   Special search
                       Au...
Will students learn that just Googling
something isn’t always the right thing to do?
Busy students might spend
           too much time
            unsuccessfully
             searching for
              inf...
Multiple tools
are needed to
meet your
diverse and
changing needs
Students learn how to
      effectively and
       efficiently find
           information
              using the
       ...
Start working through the
              exercises to
                 begin to
              learn about
                 ...
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02 Web Search

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Transcript of "02 Web Search"

  1. 1. Google is not enough Fall 2009, Class 2 Prof. Scott Moore http://www.howcanifindit.com/
  2. 2. Finding information can be frustrating.
  3. 3. You search in your job search, for classes, for personal reasons.
  4. 4. Lots more information available now.
  5. 5. And lots more technology (hardware and software), too.
  6. 6. Knowledge is now the ability to learn and the ability to find
  7. 7. Tools are evolving for specialized needs.
  8. 8. Multiple tools are needed to meet your diverse and changing needs
  9. 9. The changing context of search is driving the need for new tools.
  10. 10. Changing operating context Then Now
  11. 11. Changing operating context Then Now Experts You & me
  12. 12. Changing operating context Then Now Experts You & me Well-defined queries Ill-defined
  13. 13. Changing operating context Then Now Experts You & me Well-defined queries Ill-defined Thousands of documents Billions of documents
  14. 14. Understanding search engines will help you be a better searcher.
  15. 15. Search tools can have several functions Search tools s s
  16. 16. Search tools can have several functions Search tools generate Query results & structure s s Document set
  17. 17. Search tools can have several functions Search tools generate explore Query results & structure s s Document set
  18. 18. Search tools can have several functions Search tools generate explore Query results monitor changes & structure s s Document set
  19. 19. Categorizing search engines
  20. 20. Categorizing search engines Query terms
  21. 21. Categorizing search engines Query terms and
  22. 22. Categorizing search engines Query terms and or
  23. 23. Categorizing search engines Query terms and or Search target addresses images scholarly blogs maps news HTML PDF financial video books
  24. 24. Categorizing search engines Indexed information Query terms and or Documents Search target addresses images scholarly blogs maps news HTML PDF financial video books
  25. 25. Categorizing search engines Indexed information Query terms and (Full text) Search engine or Text Documents Search target addresses images scholarly blogs maps news HTML PDF financial video books
  26. 26. Categorizing search engines Indexed information Query terms and (Full text) Directory Search engine or Text Meta info Documents Search target addresses images scholarly blogs maps news HTML PDF financial video books
  27. 27. * + ~ - Different search not “” engines support intitle: different special link: search terms & inurl: operators. site:
  28. 28. Evaluating a search engine’s performance
  29. 29. Evaluating a search engine’s performance Relevant
  30. 30. Evaluating a search engine’s performance Retrieved
  31. 31. Evaluating a search engine’s performance Relevant Retrieved
  32. 32. Evaluating a search engine’s performance Relevant Retrieved B C A
  33. 33. Evaluating a search engine’s performance Relevant Retrieved B C A Retrieved & relevant
  34. 34. Evaluating a search engine’s performance Relevant Retrieved B C A Not retrieved but relevant Retrieved & relevant
  35. 35. Evaluating a search engine’s performance Relevant Retrieved B C A Not retrieved but relevant Retrieved & Retrieved but relevant not relevant
  36. 36. Evaluating a search engine’s performance Relevant Retrieved B C A Recall = B A+B Not retrieved but relevant Retrieved & Retrieved but Precision = B B+C relevant not relevant
  37. 37. Evaluating a search engine’s performance Relevant Retrieved B C A Recall = B A+B Not retrieved but relevant Retrieved & Retrieved but Precision = B B+C relevant not relevant
  38. 38. We can understand search engines even better if we think about the process of searching.
  39. 39. Deconstructing the search experience Search Query Engine Results Subset Searchable of Web information
  40. 40. Deconstructing the search experience Variety & usefulness of special queries Automation Search Query Engine Results Subset Searchable of Web information
  41. 41. Deconstructing the search experience Variety & usefulness of special queries Automation Search Query Engine Content (pages, categories, paid links) Results Format of results Delivery form Subset Searchable of Web information
  42. 42. Deconstructing the search experience Variety & usefulness of special queries Automation Search Query Engine Content (pages, categories, paid links) Results Format of results Delivery form Target Subset Searchable of Web information Quality of Opacity coverage
  43. 43. Deconstructing the search experience Variety & usefulness of special queries Automation Search Query Engine Content (pages, categories, paid links) Results Format of results Delivery form Target Subset Searchable of Web information Quality of How frequently Opacity coverage updated?
  44. 44. Deconstructing the search experience Variety & usefulness Quality of of special queries the experience Automation Search Query Engine Content (pages, categories, paid links) Results Responsiveness Format of results Delivery form Target Subset Searchable of Web information Quality of How frequently Opacity coverage updated?
  45. 45. Considering: Google Indexed information Query terms default Search target Special search Automation Content terms & operators How frequently Quality of coverage Opacity updated? Quality of the Responsiveness experience
  46. 46. Will students learn that just Googling something isn’t always the right thing to do?
  47. 47. Busy students might spend too much time unsuccessfully searching for information.
  48. 48. Multiple tools are needed to meet your diverse and changing needs
  49. 49. Students learn how to effectively and efficiently find information using the right tool.
  50. 50. Start working through the exercises to begin to learn about search.
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