2022

Recommendation Unlearning

Chen, Chong, Sun, Fei, Zhang, Min et al.

Understand

Recommender systems provide essential web services by learning users' personal preferences from collected data.

  • However, in many cases, systems also need to forget some training data.
  • From the perspective of privacy, several privacy regulations have recently been proposed, requiring systems to eliminate any impact of the data whose owner requests to forget.
  • From the perspective of utility, if a system's utility is damaged by some bad data, the system needs to forget these data to regain utility.

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