| Name | Description | Type | Package | Framework |
| BasicHessian | Some basic code used to calculate Hessian matrixes. | Class | org.encog.mathutil.matrices.hessian | HeatonReasearch |
| BiPolarUtil | This class contains a number of utility methods used to work with bipolar numbers. | Class | org.encog.mathutil.matrices | HeatonReasearch |
| ChainRuleWorker | A threaded worker that is used to calculate the first derivatives of the output of the neural network. | Class | org.encog.mathutil.matrices.hessian | HeatonReasearch |
| CholeskyDecomposition | Cholesky Decomposition. | Class | org.encog.mathutil.matrices.decomposition | HeatonReasearch |
| ComputeHessian | Compute (estimate) the Hessian matrix. | Interface | org.encog.mathutil.matrices.hessian | HeatonReasearch |
| EigenvalueDecomposition | Eigenvalues and eigenvectors of a real matrix. | Class | org.encog.mathutil.matrices.decomposition | HeatonReasearch |
| HessianCR | Calculate the Hessian matrix using the chain rule method. | Class | org.encog.mathutil.matrices.hessian | HeatonReasearch |
| HessianFD | Calculate the Hessian matrix using the finite difference method. | Class | org.encog.mathutil.matrices.hessian | HeatonReasearch |
| LUDecomposition | For an m-by-n matrix A with m >= n, the LU decomposition is an m-by-n unit lower triangular matrix L, an n-by-n upper triangular matrix U, and a | Class | org.encog.mathutil.matrices.decomposition | HeatonReasearch |
| Matrix | This class implements a mathematical matrix. | Class | org.encog.mathutil.matrices | HeatonReasearch |
| MatrixError | Used by the matrix classes to indicate an error. | Class | org.encog.mathutil.matrices | HeatonReasearch |
| MatrixMath | This class can perform many different mathematical operations on matrixes. | Class | org.encog.mathutil.matrices | HeatonReasearch |
| QRDecomposition | For an m-by-n matrix A with m >= n, the QR decomposition is an m-by-n orthogonal matrix Q and an n-by-n upper triangular matrix R so that A = Q*R. | Class | org.encog.mathutil.matrices.decomposition | HeatonReasearch |
| SingularValueDecomposition | Singular Value Decomposition. | Class | org.encog.mathutil.matrices.decomposition | HeatonReasearch |