Summary:
In nonlinear statistical models, standard optimality functions for experimental designs depend on the unknown parameters of the model. An appealing and robust concept for choosing a design is the minimax criterion. However, so far, minimax optimal designs have been calculated efficiently under various restrictive conditions only. We extend an iterative relaxation scheme originally proposed by Shimizu and Aiyoshi (1980) and prove its convergence under very general assumptions which cover a variety of situations considered in experimental design. Application to different specific design criteria is discussed and issues of practical implementation are addressed. First numerical results suggest that the method may be very efficient with respect to the number of iterations required.
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*Supported by a grant from the Deutsche Forschungsgemeinschaft. We are grateful to a referee for his constructive suggestions.
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Begun, A., Seidel*, W. A relaxation procedure for calculating (Γ–)minimax optimal designs. Allgemeines Statistisches Arch 88, 409– 425 (2004). https://doi.org/10.1007/s101820400180
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DOI: https://doi.org/10.1007/s101820400180