ELSI: A Medical Equipment Diagnostic System

Paul Cuddihy(cuddihy@crd.ge.com),
William Cheetham (cheetham@crd.ge.com)

GE Research & Development Center,
1 Research Circle, Niskayuna, NY 12309


Abstract - 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 equipments 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.


9 References
[1]	Cuddihy, P., and Shah, R., Method and System for Analyzing Error Logs
for Diagnostics; US Patent 5463768; Oct 31,1995

[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, 1998

[3]	Cheetham, W., Case-Based Reasoning with Confidence, Ph.D Thesis, Rensselaer 
Polytechnic Institute, 1996.
