نتایج جستجو برای: newton step

تعداد نتایج: 283964  

Journal: :SIAM J. Numerical Analysis 2016
Andreas Potschka

We present and analyze a new damping approach called backward step control for the globalization of the convergence of Newton-type methods for the numerical solution of nonlinear root-finding problems. We provide and discuss reasonable assumptions that imply convergence of backward step control on the basis of generalized Newton paths in conjunction with a backward analysis argument. In particu...

Journal: :Oper. Res. Lett. 2011
Lipu Zhang Yinghong Xu

By a modification of the classic-Newton direction in scaled version for linear optimization, we give a new interior-point algorithm based on a very simple function. The algorithm uses full modified-Newton step, thus no need to perform line search. In the processing of the algorithm, the simple function is used to control the searching direction and measure the proximity of iterates to the centr...

Journal: :Algorithmic Operations Research 2012
Behrouz Kheirfam

In this paper, we first present a brief infeasible interior-point method with full-Newton step for solving linear complementarity problem (LCP). The main iteration consists of a feasibility step and several centrality steps. First we present a full Newton step infeasible interior-point algorithm based on the classic logarithmical barrier function. After that a specific kernel function is introd...

2008
Ioannis K. Argyros IOANNIS K. ARGYROS

Abstract. We provide a semilocal convergence analysis for a cubically convergent two-step Newton method (2) recently introduced by H. Homeier [8], [9], and also studied by A. Özban [13]. In contrast to the above works we examine the semilocal convergence of the method in a Banach space setting, instead of the local in the real or complex number case. A comparison is given with a two step Newton...

Journal: :Mathematical Problems in Engineering 2022

Most of the current algorithms for solving distributed online optimization problems are based on first-order method, which simple in computation but slow convergence. Newton’s algorithm with fast convergence speed needs to calculate Hessian matrix and its inverse, leading computationally complex. A step is proposed this paper, constructs a positive definite by using information objective functi...

2009
D. F. Gill Y. Y. Azmy

Newton-Krylov methods, primarily using the Jacobian-Free Newton-Krylov (JFNK) approximation, are examined as an alternative to the traditional power iteration method for the calculation of the fundamental eigenmode in reactor analysis applications based on diffusion theory. One JFNK approach can be considered an acceleration technique for the standard power iteration as it is “wrapped around” t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده علوم ریاضی 1393

چکیده فارسی روشهای تکراری شکافت هرمیتی و هرمیتی – کج برای حل دستگاه معادلات غیر خطی رضا رخ فروز کیسمی روش شکافت هرمیتی و هرمیتی-کج hss)) که توسط بای و همکارانش ارائه شده است یک روش تکراری کارا برای حل دستگاه معادلات خطی معین مثبت تنک می باشد . اخیرا بای و همکارانش با ترکیب کردن این روش و روش نیوتن روشی به نام newton-hss را برای حل دستگاه معادلات غیر خطی تنک با ماتریس ژاکوبی معین مثبت ارائه ک...

2003
UWE HELMKE SHINTARO YOSHIZAWA

We consider a convex optimization problem on linearly constrained cones in Euclidean Jordan algebras. The problem is solved using a damped Newton algorithm. Quadratic convergence to the global minimum is shown using an explicit step-size selection. Moreover, we prove that the algorithm is a smooth discretization of a Newton flow with Lipschitz continuous derivative.

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