# Package org.encog.mathutil.matrices.hessian

Interface Summary Interface Description ComputeHessian Compute (estimate) the Hessian matrix.Class Summary Class Description BasicHessian Some basic code used to calculate Hessian matrixes.ChainRuleWorker A threaded worker that is used to calculate the first derivatives of the output of the neural network.HessianCR Calculate the Hessian matrix using the chain rule method.HessianFD Calculate the Hessian matrix using the finite difference method.

**SCaVis 1.8 © jWork.org**