Abstract
Most data-based predictive modeling techniques have an inherent weakness in that they may give unstable or inconsistent results when the predictor data is highly correlated. Predictive modeling problems of this design are usually under constrained and are termed ill-posed. This paper presents several examples of ill-posed diagnostic problems and regularization methods necessary for getting accurate and consistent prediction results. The examples include plant-wide sensor calibration monitoring and the inferential sensing of nuclear power plant feedwater flow using neural networks, and non-linear partial least squares techniques, and linear regularization techniques implementing ridge regression and informational complexity measures.
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Gribok, A.V., Hines, J.W., Urmanov, A., Uhrig, R.E. (2002). Regularization of Ill-Posed Surveillance and Diagnostic Measurements. In: Ruan, D., Fantoni, P.F. (eds) Power Plant Surveillance and Diagnostics. Power Systems. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-04945-7_20
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DOI: https://doi.org/10.1007/978-3-662-04945-7_20
Publisher Name: Springer, Berlin, Heidelberg
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