| cgm | Optimization & estimation based on Conjugate Gradient Method |
| choleskiDecomposition | Function for Choleski Decomposition |
| choleskilm | Function fits linear model using Choleski Decomposition |
| forwardsubsitution.optR | Function to solve linear system using forward substitution |
| gaussSeidel | Gauss-Seidel based Optimization & estimation |
| hatMatrix | Function determines the Hat matrix or projection matrix for given X |
| inv.optR | Invert a matrix using LU decomposition |
| jacobian | Function to evaluate jacobian matrix from functions |
| LU.decompose | LU decomposition |
| LU.optR | Solving system of equations using LU decomposition |
| LUsplit | Function to extract Lower and Upper matrix from LU decomposition |
| machinePrecision | Function to address machine precision error |
| newtonRapson | Function for Newton Rapson roots for given equations |
| nonDiagMultipication | Non-diagnoal multipication |
| opt.matrix.reorder | Function to Re-order the matrix to make dominant diagnals |
| optR | Optimization & predictive modelling Toolsets |
| optR.backsubsitution | Function to solve linear system using backsubsitution |
| optR.default | Optimization & predictive modelling Toolsets |
| optR.fit | Fitter function for Linear/Non-linear system with form Ax=b |
| optR.formula | Optimization & predictive modelling Toolsets |
| optR.gauss | gauss to solve linear systems |
| optR.multiplyfactor | Function to estimate lambda |
| optRFun | Function based optimization module |
| optRFun.newtonRapson | Function based optimization module |
| predict.optR | Prediction function based on optR class |
| print.optR | print coefficients for optR class |
| summary.optR | Generate Summary for optR class |