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《Journal of Qufu Normal University(Natural Science)》 1988-03
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On Quadratic Convergence of Methods for Function Minimization Without Calculating Derivatives

Lin Furong(Department of Statistics and Operations Research, Fudan Univeersity,Shanghai, China)  
Toint and Calliers' result, i.e.superlinear convergence of conjugate methods without calculating derivatives, is extended to quadratic convergence in this paher. Besides, for the purpose of convergence rate,the demand on the precision of the non-exact line search is studied.
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