1. Google is not enough
Fall 2009, Class 2
Prof. Scott Moore
http://www.howcanifindit.com/

2. Finding information
can be frustrating.

3. You search
in your job
search, for
classes, for
personal
reasons.

4. Lots more information available now.

5. And lots more
technology
(hardware and
software), too.

6. Knowledge is
now the ability
to learn and the
ability to find

7. Tools are evolving for specialized needs.

8. Multiple tools
are needed to
meet your
diverse and
changing needs

9. The changing context
of search is
driving the
need for
new tools.

10. Changing operating context
Then Now

11. Changing operating context
Then Now
Experts You & me

12. Changing operating context
Then Now
Experts You & me
Well-defined queries Ill-defined

13. Changing operating context
Then Now
Experts You & me
Well-defined queries Ill-defined
Thousands of documents Billions of documents

14. Understanding
search engines
will help you be a
better searcher.

15. Search tools can have several functions
Search tools
s
s

16. Search tools can have several functions
Search tools
generate
Query results
& structure
s
s
Document set

17. Search tools can have several functions
Search tools
generate
explore
Query results
& structure
s
s
Document set

18. Search tools can have several functions
Search tools
generate
explore
Query results monitor
changes
& structure
s
s
Document set

19. Categorizing search engines

20. Categorizing search engines
Query terms

21. Categorizing search engines
Query terms
and

22. Categorizing search engines
Query terms
and
or

23. Categorizing search engines
Query terms
and
or
Search target
addresses images
scholarly blogs
maps news
HTML PDF
financial video books

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. 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. 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. *
+
~
-
Different search not
“”
engines support intitle:
different special link:
search terms & inurl:
operators. site:

28. Evaluating a search engine’s performance

29. Evaluating a search engine’s performance
Relevant

30. Evaluating a search engine’s performance
Retrieved

31. Evaluating a search engine’s performance
Relevant Retrieved

32. Evaluating a search engine’s performance
Relevant Retrieved
B C
A

33. Evaluating a search engine’s performance
Relevant Retrieved
B C
A
Retrieved &
relevant

34. Evaluating a search engine’s performance
Relevant Retrieved
B C
A
Not retrieved but
relevant
Retrieved &
relevant

35. Evaluating a search engine’s performance
Relevant Retrieved
B C
A
Not retrieved but
relevant
Retrieved & Retrieved but
relevant not relevant

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

39. Deconstructing the search experience
Search
Query
Engine
Results
Subset Searchable
of Web information

40. Deconstructing the search experience
Variety & usefulness
of special queries
Automation Search
Query
Engine
Results
Subset Searchable
of Web information

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. 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. 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. 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. 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. Will students learn that just Googling
something isn’t always the right thing to do?

47. Busy students might spend
too much time
unsuccessfully
searching for
information.

48. Multiple tools
are needed to
meet your
diverse and
changing needs

49. Students learn how to
effectively and
efficiently find
information
using the
right tool.

50. Start working through the
exercises to
begin to
learn about
search.