On the importance of being diverse: analysing similarity and diversity in web search

  • Authors:
  • Maurice Coyle;Barry Smyth

  • Affiliations:
  • Smart Media Institute, University College Dublin, Dublin, Ireland;Smart Media Institute, University College Dublin, Dublin, Ireland

  • Venue:
  • Intelligent information processing II
  • Year:
  • 2004

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Abstract

We argue that the emphasis normally placed on query-similarity in Web search limits search precision. We draw on related work in case-based reasoning (CBR) and recommender systems research, which shows how enhancing diversity can improve the quality of retrieved cases and recommendations. We investigate the use of related diversity-enhancing retrieval techniques in Web search, showing that similar benefits are available, i.e. that result diversity can be significantly enhanced without compromising query similarity or result precision and recall.