Lines Matching refs:positive

903 is solved to obtain the direction, where $\rho_k$ is a positive
1114 positive definite. The available options are to use no preconditioner,
1185 Hessian matrix will be positive-semidefinite; the perturbation will
1459 must be symmetric and positive definite. The available options are to
1529 The limited-memory, variable-metric method (LMVM) computes a positive definite
1568 object that represents a positive-definite matrix. The approximation
1587 the conjugate gradient method for solving symmetric, positive-definite
1758 safeguarded to be positive. `icc` and `ilu` options produce good
1791 where $\rho_k$ is a dynamically adjusted positive constant. The
1827 positive-definite Hessian approximation. This algorithm is available via
1842 guarantee positive-definiteness. The BNLS framework with Hessian
2295 approximation to the reduced Hessian matrix, a positive-definite matrix,
2318 Because the Hessian approximation is positive definite and we know its
2835 positive weight parameter, and $\| x \|$ is the Euclidean norm of
2845 function, $\lambda$ is a positive weight parameter, and