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updated 9 months ago

Patch Curvature by Dirk-Jan Kroon

Principal, Gaussian and Mean Curvature of triangulated mesh (curvature, gaussian, principal)

[Cmean,Cgaussian,Dir1,Dir2,Lambda1,Lambda2]=patchcurvatur...

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updated 2 years ago

Teaching Numerical Gradients and Hessians by Brendan Wood

Simple, well-commented Matlab code to demonstrate how to take numerical derivatives and Hessians. (teaching, learning, derivative)

fun(X, NFV)

num_grad(func, X, NFV, h)

num_hess(func, X, NFV, h)

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updated 2 years ago

hessianAnalysisDemo by Steinar Elgsæter

Demo of how Hessian analysis can reveal a poorly scaled estimation problem (hessian, numerical analysis, modeling)

hessianAnalysisDemo.m

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updated 3 years ago

Adaptive Robust Numerical Differentiation by John D'Errico

Numerical derivative of an analytically supplied function, also gradient, Jacobian & Hessian (adaptive, differentiation, automatic)

derivest_demo

multivariable_calc_demo

derivest(fun,x0,varargin)

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updated almost 4 years ago

FMINLBFGS: Fast Limited Memory Optimizer by Dirk-Jan Kroon

Quasi newton limited memory BFGS and Steepest decent optimizer for large amount of unknowns (optimization, optimizer, bfgs)

fminlbfgs.m

myfun(x)

example.m

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updated 4 years ago

Image Edge Enhancing Coherence Filter Toolbox by Dirk-Jan Kroon

Advanced 2D/3D noise removal and edge enhancing with anisotropic diffusion filtering ( Weickert ) (scheme, diffusion scheme, diffusion)

CoherenceFilter(u,Options)

D=derivatives(I,option)

I=imgaussian(I,sigma,siz)

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updated 5 years ago

convexchecker by Bapi Chatterjee

It checks real valued multidimensional function, whether it is convex. (optimization, finance, convex)

convexchecker.m

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updated 5 years ago

Multivariate Nonlinear optimization using Marquardt Method by Siamak Faridani

Multivariate Nonlinear optimization using Marquardt Method (optimization, nonlinear, hessian)

Marquardt.m

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updated almost 7 years ago

Complex step Hessian by Yi Cao

Calculate Hessian using complex step differentiation (hessian, complex step differen..., complex)

[A,g,z]=hessiancsd(fun,x)

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updated almost 7 years ago

Symbolic Hessian Evaluator by Brad Ridder

For a symbolic input function f, returns the symbolic Hessian matrix. A real time saver imho -_- (optimization, hessian, matrix)

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