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Model Selection, Transformations and Variance Estimation in Nonlinear Regression

Please always quote using this URN: urn:nbn:de:0297-zib-2096
  • The results of analyzing experimental data using a parametric model may heavily depend on the chosen model. In this paper we propose procedures for the adequate selection of nonlinear regression models if the intended use of the model is among the following: 1. prediction of future values of the response variable, 2. estimation of the unknown regression function, 3. calibration or 4. estimation of some parameter with a certain meaning in the corresponding field of application. Moreover, we propose procedures for variance modelling and for selecting an appropriate nonlinear transformation of the observations which may lead to an improved accuracy. We show how to assess the accuracy of the parameter estimators by a "moment oriented bootstrap procedure". This procedure may also be used for the construction of confidence, prediction and calibration intervals. Programs written in Splus which realize our strategy for nonlinear regression modelling and parameter estimation are described as well. The performance of the selected model is discussed, and the behaviour of the procedures is illustrated by examples.

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Metadaten
Author:Olaf Bunke, Bernd Droge, Jörg Polzehl
Document Type:ZIB-Report
Date of first Publication:1995/12/19
Series (Serial Number):ZIB-Report (SC-95-43)
ZIB-Reportnumber:SC-95-43
Published in:Appeared in: Statistics, 33, (1999), 197-240
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