| qr | The QR factorization of a matrix |
| qrchol | Cholesky decomposition via QR factorization. |
| qrdowndate | Fast downdating of the QR factorization |
| qrls | Ordinary least squares for the linear regression model |
| qrmls | Ordinary least squares for the linear multivariate regression model |
| qrmridge | RIDGE estimator for the linear multivariate regression model |
| qrmridge_cv | Cross-validation of the RIDGE estimator for the linear multivariate regression model |
| qrridge | RIDGE estimation for the linear regression model |
| qrridge_cv | Cross-validation of the RIDGE estimator for the linear regression model |
| qrsolve | Solution of linear system of equations, via the QR decomposition. |
| qrupdate | Fast updating of the QR factorization |
| rchol | Cholesky decomposition via R factorization. |
| rdowndate | Fast downdating of the R matrix |
| rupdate | Fast updating of the R matrix |