A new interpretation of average precision

  • Authors:
  • Stephen Robertson

  • Affiliations:
  • Microsoft Research, Cambridge, United Kngdm

  • Venue:
  • Proceedings of the 31st annual international ACM SIGIR conference on Research and development in information retrieval
  • Year:
  • 2008

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Abstract

We consider the question of whether Average Precision, as a measure of retrieval effectiveness, can be regarded as deriving from a model of user searching behaviour. It turns out that indeed it can be so regarded, under a very simple stochastic model of user behaviour.