Abstract

AbstractThe Two‐Derivative Method of optimization, recently described by Methot, Cloutier and Cholette, has been shown to be a special case of the Newton‐Raphson Method, and results when the matrix of second derivatives is assumed to be diagonal. Examples are given to illustrate that the Two‐Derivative Method may diverge if a convergence forcer is not used. A simple form of forcer is shown to improve convergence, and it is suggested that a forcer should always be used with this method.

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