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Please predict whether this patent is acceptable.PATENT ABSTRACT: A method for post-adaption of an at least partially data-based function model which corresponds to a sum of a basis function model, e.g., a data-based basis function model, and an additive fault model, includes: providing the basis function model; recording training data; ascertaining the data-based additive fault model based on difference training data which represent differences between the measured values of the training data and the function values of the data-based basis function model at the measuring points of the training data; and modifying the training data and/or the additive fault model so that function values of the data-based function model remain within a predefined adaption range.