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MARIKA - A model revision system using qualitative analysis of simulationsThis paper describes portions of a novel system called MARIKA (Model Analysis and Revision of Implicit Key Assumptions) to automatically revise a model of the normal human orientation system. The revision is based on analysis of discrepancies between experimental results and computer simulations. The discrepancies are calculated from qualitative analysis of quantitative simulations. The experimental and simulated time series are first discretized in time segments. Each segment is then approximated by linear combinations of simple shapes. The domain theory and knowledge are represented as a constraint network. Incompatibilities detected during constraint propagation within the network yield both parameter and structural model alterations. Interestingly, MARIKA diagnosed a data set from the Massachusetts Eye and Ear Infirmary Vestibular Laboratory as abnormal though the data was tagged as normal. Published results from other laboratories confirmed the finding. These encouraging results could lead to a useful clinical vestibular tool and to a scientific discovery system for space vestibular adaptation.
Document ID
19940034881
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Groleau, Nicolas
(NASA Ames Research Center Moffett Field, CA, United States)
Frainier, Richard
(Recom Technologies, Inc.; NASA, Ames Research Center Moffett Field, CA, United States)
Colombano, Silvano
(NASA Ames Research Center Moffett Field, CA, United States)
Hazelton, Lyman
(NASA Ames Research Center Moffett Field, CA, United States)
Szolovits, Peter
(MIT Cambridge, MA, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Publication Information
Publication: In: AIAA Computing in Aerospace Conference, 9th, San Diego, CA, Oct. 19-21, 1993, Technical Papers. Pt. 2 (A94-11401 01-62)
Publisher: American Institute of Aeronautics and Astronautics
Subject Category
Cybernetics
Report/Patent Number
AIAA PAPER 93-4666
Accession Number
94A11536
Distribution Limits
Public
Copyright
Other

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