LIBSVM中的不同算法,如C-SVM和nu-SVM在模型和求解上并没有本质的区别,只是做了一个参数的变换,所以选择自己习惯的就好。 LIBLINEAR的优化算法主要分为两大类,即求解原问题(primal problem)和对偶问题(dual problem)。求解原问题使用的是TRON的优化算法,对偶问题使用的是Coordinate Descent优化算法。总的来说,两个...
Tůma. The dual variable approach for the mixed-hybrid approximation of the potential fluid flow problem, Technical Report RAL-TR-2001-023, 2001.M. Arioli, J. Maryˇska, M. Rozloˇzn´ik and T˚uma (2001), Dual variable methods for mixed-hybrid finite element approximation of the ...
Primal Methods are Better than Dual Methods for Solving Overdetermined Linear Systems in the $l_\\\infty $ Sense? Primal methods are better than dual methods for solving overdetermined linear systems in the l∞ sense? Siam J. Numer. Anal., Philadelphia, v.26, p... RH Bartels,AR Conn,Y...
+ h(kx), \end{aligned}$$ which for a lot of variational problems might be the starting point. analogously, taking the infimum over x leads to the dual problem. given an algorithm producing iterates \((x^n,y^n)\) for the solution of ( 8 ), the goal of this section is to ...
primaldualequationsdiscretizationgeometricspaces a r X i v : p h y s i c s / 0 5 0 3 0 1 3 v 2 [ p h y s i c s . c o m p - p h ] 1 4 N o v 2 0 0 5 GeometricFiniteElementDiscretizationofMaxwellEquationsin PrimalandDualSpaces BoHe ∗ andF.L.Teixeira † Electro...
Primal vs. Dual Variable Approach for Mixed-Hybrid Finite Element Approximation of the Potential Fluid Flow Problem in Porous MediaMixed-hybrid finite element discretization of the Darcy's law and the continuity equation that describe the potential fluid flow problem in porous media leads to symmetric...
It is well known that any non-binary discrete constraint satisfaction problem (CSP) can be translated into an equivalent binary CSP. Two translations are known: the dual graph translation and the hidden variable translation. However, the... F Bacchus,PV Beek - Fifteenth National Conference on Ar...
We employ the natural policy gradient method to solve the discounted innite-horizon Constrained Markov Decision Processes (CMDPs) problem. Specically, we propose a new Natural Policy Gradient Primal-Dual (NPG-PD) method for CMDPs which updates the primal variable via natural policy gradient ...
An alternating direction method of multipliers (ADMM) is proposed to solve the optimization problem of SPDLSSVM, and its convergence has been proved. In addition, an L-1-norm based sparse primal LSSVM (SPLSSVM) and an L-1-norm based sparse dual LSSVM (SDLSSVM) are also presented, ...
How well can primal-dual and local-ratio algorithms perform - Borodin, Cashman, et al. - 2005 () Citation Context ...Edmonds † A. Borodin ‡ Abstract We prove matching upper and lower bounds for the Minimum Steiner Tree (MStT) problem within the adaptive priority stack model introduced...