This paper concerns itself with efficient inversion and updating procedures for large, structurally equivalent Jacobian matrices as they occur in the generalized reduced gradient method for nonlinear programming...
This paper touches on the role of models in a policy/planning environment, and establishes the need for a general algebraic modeling system. The main purpose of the paper, however, is to develop a notation...
This note uses existing knowledge in classifying complementarity problems. It then develops a compact GAMS notation for models with complementarity conditions, and shows how the information contained in...
The role of domain analysis and the automatic generation of exact point-derivatives in the solution of large nonlinear systems of algebraic equations is examined. The paper provides an informal technical...
Matrix augmentation is used for the inversion of bases associated with linearly constrained control problems. It is shown how an efficient data structure can be maintained by keeping all state variables...
A compact and flexible updating procedure using matrix augmentation is developed. It is shown that the representation of the updated inverse does not grow monotonically in size, and may actually decrease...
The Hellerman-Rarick preassigned pivot procedure and a partitioning algorithm are used to construct reduced Jacobian matrices for the solution of large sparse nonlinear systems of equations.
The Helierman-Rarick preassigned pivot procedure and recursive partitioning algorithm are used to find a stable and compact representation of the inverse of a general sparse matrix.