canGetCost

PURPOSE

SYNOPSIS

DESCRIPTION

 Checks whether the cost function can be computed for a problem structure.

 function candoit = canGetCost(problem)

 Returns true if the cost function can be computed given the problem
 description, false otherwise.

 See also: getCost canGetDirectionalDerivative canGetGradient canGetHessian

CROSS-REFERENCE INFORMATION

• getGradientFD Computes an approx. of the gradient w/ finite differences of the cost.
• arc Adaptive regularization by cubics (ARC) minimization algorithm for Manopt
• barzilaiborwein Riemannian Barzilai-Borwein solver with non-monotone line-search.
• rlbfgs Riemannian limited memory BFGS solver for smooth objective functions.
• conjugategradient Conjugate gradient minimization algorithm for Manopt.
• approxgradientFD Gradient approx. fnctn handle based on finite differences of the cost.
• neldermead Nelder Mead optimization algorithm for derivative-free minimization.
• pso Particle swarm optimization (PSO) for derivative-free minimization.
• steepestdescent Steepest descent (gradient descent) minimization algorithm for Manopt.
• trustregions Riemannian trust-regions solver for optimization on manifolds.
• checkdiff Checks the consistency of the cost function and directional derivatives.
• checkgradient Checks the consistency of the cost function and the gradient.
• checkhessian Checks the consistency of the cost function and the Hessian.
• manoptsolve Gateway helper function to call a Manopt solver, chosen in the options.
• plotprofile Plot the cost function along a geodesic or a retraction path.
• surfprofile Plot the cost function as a surface over a 2-dimensional subspace.

SOURCE CODE

0001 function candoit = canGetCost(problem)
0002 % Checks whether the cost function can be computed for a problem structure.
0003 %
0004 % function candoit = canGetCost(problem)
0005 %
0006 % Returns true if the cost function can be computed given the problem
0007 % description, false otherwise.
0008 %
0009 % See also: getCost canGetDirectionalDerivative canGetGradient canGetHessian
0010 
0011 % This file is part of Manopt: www.manopt.org.
0012 % Original author: Nicolas Boumal, Dec. 30, 2012.
0013 % Contributors:
0014 % Change log:
0015 
0016 
0017     candoit = isfield(problem, 'cost') || isfield(problem, 'costgrad');
0018     
0019 end