When Relevance is not Enough - Promoting Diversity and Freshness in Personalized Question Recommendation

• Paper link
  • http://www.pelleg.org/shared/hp/download/relevance-is-not-enough.pdf
• 배경
  • question-answering sites 에 대한 추천 시스템
  • The feature that they really missed was diversity.
    • In other words, showing them just the main topics they had previously expressed interest in was simply too dull.