Chapter 6. User Profiles and Their Use

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Chapter 6. User Profiles and Their Use

• EX JASIS, ASIST, ALA, OLA, TLA
• Simple Profiles
• A set of key terms
• Being stored in the system
• were developed for
• Current awareness system
• Selective dissemination of information
• Routing Query - Persistent query
• Ad Hoc Query - asked just once

2
Extended Profiles

• EX Barney, Pokemon, Yugi-oh
• Educational level
• Familiarity with the area of inquiry
• Language capabilities
• Journal subscriptions
• Reading habits
• Specific preference

3
Current Awareness Systems

• Requirements
• Only the current literature needs to be searched
• Searches should be made automatically, without
  the user needing to query the system actively
• Possible areas - Business, Finance, Medical
  area, Military area, etc.

4
Retrospective Search Systems

• Ad Hoc Query
• To search the entire body of literature

5
Modifying the Query by the Profile

• Post-filter
• - The query is processed normally
• - The results are organized on the basis of
  information in the profile
• Pre-filter
• - The profile can be used to modify the query
  before retrieval is attempted.

Query
Retrieved results
Profile
Returned results
Query
Returned results
Temporary Query
Profile
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The Query and Profile as Separate Reference Points

• Co-filters - Use distance
• EX D a,b,c,d,e,f,g,h,i,j
• D,Q 1,5,12,13,10,20,11,18,15,3
• D,P 6,3,11,13,20,3,19,5,11,16
• - Disjunctive model
• D,Q
• (Ans for d 10) 1,5,10,3,6,3,3,5
  a,b,e,j,a,b,f,h a,b,e,f,h,j
• - Conjunctive model
• D,Q
• - Ellipsoidal model
• D,Q D,P
• - Cassini oval model
• D,Q D,P

7
Ethics of a User Profile

• Limit or tailor the output to a given user
• The invasion of users privacy

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Form

• methodpost
  
• Username
• size12 maxlength12
  
• Password
• value size8 maxlength8
  
• Name
• 
  
• City, State
• 
  

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Form

• Comments
• wrapphysical
  
• What pets do you have?
• valuecatCat
  
• What is your size?
• Small
• Medium
• valuelLarge
  

10
Form

• Select your favorite color
• Fire engine red
• Canary yellow
•