Discussion Class 1

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Discussion Class 1

• Three Information Retrieval Systems

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Discussion Classes
Format Questions. Ask a member of the class t
o answer. Provide opportunity for others to comm
ent. 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 Document sets

• Each of the three information retrieval systems
  indexes a set
  
• of documents
• (a) What documents does Ask.com index?
• What documents does the Library of Congress
  search service index?
  
• What documents does the PubMed search service
  index?
  

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Question 2 Red wine

• What is the medical evidence that red wine is
  good
  
• or bad for your health?
• How does Ask.com help a user answer this
  question?
  
• (b) How does Ask.com differ from Google?

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How do you know if the information is reliable?
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Question 4 PubMed

• How does PubMed order the records that are
  returned from a search?
  
• What is the function of the Limit tab below?

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Question 5. PubMed
What is this information?
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Question 6 White wine
How would I search to compare the health
differences between white and red wine?
How would I discover if a result that was
published in 1996 had been confirmed or disproved
by a later study?
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Question 7 Palestine

• What in history led to the current turmoil in
  Palestine and
  
• the neighboring countries?
• How does the Library of Congress Catalog help a
  user answer this question?
  
• (b) How does Ask.com help a user answer this
  question?
  
• Under what circumstance would you use each system
  to find
  
• information such as this?

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Question 8 Fielded searching

• For the Library of Congress catalog
• Explain the Guided Search
• In what order are the search results presented?

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Question 8 Results
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Question 10 Browsing

• (a) What support does Ask.com give for
  browsing?
  
• What support does the Library of Congress Catalog
  give for browsing?