A session-specific opportunity cost model for rank-oriented recommendation

Brian Ackerman, Chong Wang, Yi Chen

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Recommender systems are changing the way that people find information, products, and even other people. This paper studies the problem of leveraging the context of the items presented to the user in a user/system interaction session to improve the recommender system's ranking prediction. We propose a novel model that incorporates the opportunity cost of giving up the other items in the session and computes session-specific relevance values for items for context-aware recommendation. The model can work on a variety of different problems settings with emphasis on implicit user feedback as it supports varying levels of ordinal relevance. Experimental evaluation demonstrates the advantages of our new model with respect to the ranking quality.

Original languageEnglish (US)
Pages (from-to)1259-1270
Number of pages12
JournalJournal of the Association for Information Science and Technology
Issue number10
StatePublished - Oct 2018

All Science Journal Classification (ASJC) codes

  • Information Systems
  • Computer Networks and Communications
  • Information Systems and Management
  • Library and Information Sciences


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