Convergence of the Nelder-Mead method |
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Authors: | Galántai Aurél |
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Institution: | 1.óbuda University, Bécsi u. 96/b, 1034, Budapest, Hungary ; |
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Abstract: | We develop a matrix form of the Nelder-Mead simplex method and show that its convergence is related to the convergence of infinite matrix products. We then characterize the spectra of the involved matrices necessary for the study of convergence. Using these results, we discuss several examples of possible convergence or failure modes. Then, we prove a general convergence theorem for the simplex sequences generated by the method. The key assumption of the convergence theorem is proved in low-dimensional spaces up to 8 dimensions. |
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