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Quadratic regression models. (English) Zbl 0848.62033
Estimation procedures in nonlinear regression models, in comparison with procedures in linear models, are relatively complicated. However, when the effects of nonlinearity are limited up to the second power of differences between the actual values of the parameters and a priori (by a statistician chosen) values, then the estimation procedure can be developed with similar features as the linear procedures have been, e.g., nonrecursive calculation, the explicit formulae for the covariance matrix of the estimator, etc. The aim of the paper is to contribute to a development of such procedures.

62J02 General nonlinear regression
62H12 Estimation in multivariate analysis
62F10 Point estimation
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