Transcript PowerPoint

Discussion Class 12
User Interfaces and Visualization
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Discussion Classes
Format:
Question
Ask a member of the class to answer.
Provide opportunity for others to comment.
When answering:
Stand up.
Give your name. Make sure that the TA hears it.
Speak clearly so that all the class can hear.
Suggestions:
Do not be shy at presenting partial answers.
Differing viewpoints are welcome.
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Question 1: The Standard Model of
Information Retrieval
(a) The author has several
criticisms of the standard
model. What are they?
(b) Do these criticisms apply
to the Search/Browse
model used throughout
this course?
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Question 2: The Berry Picking Model
of Information Retrieval
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The berry picking model is an alternative model of
Information Retrieval. What is it?
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How do browsing, querying, navigating, and scanning fit
into this model?
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What information structures do they apply to?
Question 3: Starting Points
(a) What is the starting point problem?
(b) The author describes the following techniques for providing
overviews. Explain each of them and its effectiveness.
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directory or category hierarchies
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automatically derived clustering
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co-citation overviews
Question 4: Graphical Overviews
The author is an expert in information visualization, yet she has
some reservations about visualization as a tool for exploring large
collections of information.
(a) Describe some of the strengths of visualization.
(b) Describe some of the problems.
How much do the problems appear to be fundamental and how
much are they short term difficulties with current systems?
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Question 5: Future Directions
In the final section, the author expresses her ideas about the
future directions of research into user interfaces and
visualization.
The chapter was published in 1999. How do you think that
these ideas might be different if the chapter were written
today?
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Search / Scan / Browse model
Return objects
Return
hits
Browse content
Scan results
Search index
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