System and User Research

  • William Hersh
Part of the Health Informatics book series (HI)


Information Retrieval Noun Phrase Relevance Feedback Term Frequency Query Expansion 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer Science + Business Media, LLC 2009

Authors and Affiliations

  • William Hersh
    • 1
  1. 1.Department of Medical Informatics & Clinical EpidemiologyOregon Health & Science UniversityBICC PortlandUSA

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