Results 81 to 90 of about 4,814 (186)

The optimal scaling factor based on Secant Method for image watermarking using the hybrid DTCWT-DCT domain

Iraqi Journal for Computer Science and Mathematics
This paper proposes an implementation of the secant optimization method on the watermark embedding in DTCWT domain. An objective function combining PSNR and NC (The Normalized Correlation) values calculated for a set of common attacks is used in the ...
Mohamed lebcir, Suryanti Awang , Ali Benziane   +2 more
doaj   +1 more source

Effect of tangent and secant elastic constants on CCBO stress evaluation in transversely isotropic rock

Acta Polytechnica CTU Proceedings
The Compact Conical Borehole Over-coring (CCBO) method is employed for the determination of the three-dimensional stress state in rock environments. The method utilises a strain gauge cell to quantify the deformation of over-cored rock, the deformation ...
Alice Petrlíková, Lubomír Staš, Alexej Kolcun, Vlastimil Kajzar, Petr Koníček, Kamil Souček   +5 more
doaj   +1 more source

Improved convergence analysis of mixed secant methods for perturbed subanalytic variational inclusions

, 2016
We present a local convergence analysis of mixed secant method in order to approximate solutions of variational inclusions. The local convergence results are given under weaker conditions than in earlier studies such as [4], resulting to a more precise ...
I. K. Argyros, D. González [0000-0001-5282-7251]   +1 more
core  

Historical Development of the BFGS Secant Method and Its Characterization Properties

, 2010
The BFGS secant method is the preferred secant method for finite-dimensional unconstrained optimization. The first part of this research consists of recounting the historical development of secant methods in general and the BFGS secant method in ...
Papakonstantinou, Joanna Maria
core  

A Convergence Theory for the Structured BFGS Secant Method with an Application to Nonlinear Least Squares

, 1987
In 1981, Dennis and Walker developed a convergence theory for structured secant methods which included the PSB and the DFP secant methods, but not the straightforward structured version of the BFGS secant method.
Dennis, J.E. Jr., Martinez, H.J., Tapia, R.A.   +2 more
core  

Historical development of the BFGS secant method and its characterization properties

, 2009
The BFGS secant method is the preferred secant method for finite-dimensional unconstrained optimization. The first part of this research consists of recounting the historical development of secant methods in general and the BFGS secant method in ...
Papakonstantinou, Joanna Maria
core  

A self-scaling memoryless BFGS based conjugate gradient method using multi-step secant condition for unconstrained minimization

summary:Conjugate gradient methods are widely used for solving large-scale unconstrained optimization problems, because they do not need the storage of matrices.
Kim, Yong, Kim, Yongjin, Jong, Yunchol
core   +1 more source

SECTON : A COMBINATION OF NEWTON METHOD AND SECANT METHOD FOR SOLVING NON LINEAR EQUATIONS

, 2011
Newton method is a famous method for solving non linear equations. However, this method has a limitation because it requires the derivative of the function to be solved. Secant method is more flexible.
Rokhman, Nur
core  

SECTON : A COMBINATION OF NEWTON METHOD AND SECANT METHOD FOR SOLVING NON LINEAR EQUATIONS

, 2012
Newton method is a famous method for solving non linear equations. However, this method has a limitation because it requires the derivative of the function to be solved. Secant method is more flexible.
Rokhman, Nur
core  

Least-Change Secant Update Methods with Inaccurate Secant Conditions

, 1983
In this paper, we investigate the role of the secant or quasi-Newton condition in the sparse Broyden or Schubert update method for solving systems of nonlinear equations whose Jacobians are either sparse, or can be approximated acceptably by conveniently
Dennis, J.E. Jr., Walker, Homer F.
core