User Modeling and Recommender Systems at TU München

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User can act in different roles --> user pseudonyms, identities

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Exemplary flashcards for User Modeling and Recommender Systems at the TU München on StudySmarter:

Name examples for implicit user profile acqusition.

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Identity (of a user)    

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Pseudonym    

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Anonymity resp. anonymous information access    
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User profile

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User model

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User modeling

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User profile vs. user model
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Dimension of User Models    

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Exemplary flashcards for User Modeling and Recommender Systems at the TU München on StudySmarter:

User Modeling and Recommender Systems

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User Modeling and Recommender Systems

Content- based filter

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User Modeling and Recommender Systems

User can act in different roles --> user pseudonyms, identities

  • Sociological term, related to a user‘s social roles

  • In our context: identity = identification of a person + stored information in user profile

  • Virtual identity: identity in online world

User Modeling and Recommender Systems

Name examples for implicit user profile acqusition.
  • web server log
  • user activity logging on smartphones
  • ios location tracking

User Modeling and Recommender Systems

Identity (of a user)    
  • Sociological term, related to a user's social roles
  • identity = identification of a person + stored information in user profile
  • Virtual identity: identity in online world

User Modeling and Recommender Systems

Pseudonym    
  • Identifier for a (virtual) identity 
  • Assignment of data and actions of persons without revealing the real or civil identity of the user

User Modeling and Recommender Systems

Anonymity resp. anonymous information access    
  • Using a new pseudonym for every access/interaction
  • No mapping between user data or actions

User Modeling and Recommender Systems

User profile
Representation of a user in an information system, information stored about user

User Modeling and Recommender Systems

User model
  • Abstract data structure to characterize users
  • Also possible: group models for group of users

User Modeling and Recommender Systems

User modeling

  • Process to create, maintain and update a user model
  • Includes deriving user characteristics from data (Data is either explicitly provided by user or origins from observations)

User Modeling and Recommender Systems

User profile vs. user model
  • Terms with similar meaning, often used synonymous 
  • Profile denotes the concrete information that is stored about the user in a system
  • Distinct "model" vs. "profile" not important
  • Model designates the abstract representation of users

User Modeling and Recommender Systems

Dimension of User Models    
  • Nature (What)
  • Structure (How)
  • Construction and Maintenance 

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