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Data Analysis & Statistical Methods for Command File ErrorsThis paper explains current work on modeling for managing the risk of command file errors. It is focused on analyzing actual data from a JPL spaceflight mission to build models for evaluating and predicting error rates as a function of several key variables. We constructed a rich dataset by considering the number of errors, the number of files radiated, including the number commands and blocks in each file, as well as subjective estimates of workload and operational novelty. We have assessed these data using different curve fitting and distribution fitting techniques, such as multiple regression analysis, and maximum likelihood estimation to see how much of the variability in the error rates can be explained with these. We have also used goodness of fit testing strategies and principal component analysis to further assess our data. Finally, we constructed a model of expected error rates based on the what these statistics bore out as critical drivers to the error rate. This model allows project management to evaluate the error rate against a theoretically expected rate as well as anticipate future error rates.
Document ID
20160008258
Document Type
Conference Paper
Authors
Meshkat, Leila (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Waggoner, Bruce (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Bryant, Larry (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
July 1, 2016
Publication Date
August 5, 2014
Subject Category
Statistics and Probability
Computer Operations and Hardware
Meeting Information
AIAA SPACE 2014 Conference and Exposition(San Diego, CA)
Distribution Limits
Public
Copyright
Other
Keywords
Correlation Analysis
Principal Component Analysis

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