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Part of the Health Informatics book series (HI)


This chapter discusses retrieval or search. It begins with an overview of the search process. It then turns attention to the general principles of searching, including a description of exact-match and partial-match approaches. This is followed by a discussion of specific searching interfaces. The chapter closes with a discussion of document delivery and a specific type of retrieval known as information filtering.


  • Exact-match searching
  • Boolean operators
  • Partial-match searching
  • Term selection
  • Document delivery
  • Notification
  • Information filtering

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  • DOI: 10.1007/978-3-030-47686-1_5
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Change history

  • 17 September 2020

    The original version of the book was inadvertently published with wrong Equations 5.2, 5.3 and 5.4, and the revised equations were updated in the chapter as follows,


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Correspondence to William Hersh .

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Hersh, W. (2020). Retrieval. In: Information Retrieval: A Biomedical and Health Perspective. Health Informatics. Springer, Cham.

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