Abstract: The nonlinear conjugate gradient (NLCG) algorithm is one of the popular linearized methods used to solve the frequency-domain electromagnetic (EM) geophysical inverse problem. During NLCG ...
Abstract: This paper extends the conjugate gradient minimization method of Fletcher and Reeves to optimal control problems. The technique is directly applicable only to unconstrained problems; if ...
There has been a lot of work on automatic Hessian computation, but for large-scale problems you can ultimately only compute Hessian–vector products efficiently in general, which are equivalent to a ...
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