ELSI: A Medical Equipment Diagnostic System

  • Paul Cuddihy
  • William Cheetham
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1650)


A case-based reasoning system for diagnosing medical equipment, called ELSI, has been in use by the GE corporation since 1994. When a customer or field engineer calls the service center for help with a problem, the equipment’s error log is automatically downloaded. In ninety seconds or less, ELSI displays a sorted list of the best-matching logs in a case base of previous known problems, shows the fix, service notes, explains which sections of the log match, and which fixes each section predicts. This diagnostic information allows the service center engineer to recommend a temporary work-around or remote fixes to a customer, or helps a field engineer show up on site with the right parts the first time.


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  1. [1]
    Cuddihy, P., and Shah, R., “Method and System for Analyzing Error Logs for Diagnostics”; US Patent 5463768; Oct 31,1995Google Scholar
  2. [2]
    Cuddihy, P., and Cheetham, W., “System and Method for Estimating a Measure of Confidence in a Match Generated from a Case-based Reasoning System”; US Patent 5799148; Aug 25, 1998Google Scholar
  3. [3]
    Cheetham, W., Case-Based Reasoning with Confidence, Ph.D Thesis, Rensselaer Polytechnic Institute, 1996.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • Paul Cuddihy
    • 1
  • William Cheetham
    • 1
  1. 1.GE Research & Development CenterNiskayuna

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