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:
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
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.