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Modeling by Object-Driven Linear Elemental Relations (MODLER) is a computer language for representing linear programming models, completely separate from instances defined by data realizations. It also includes representations of binary variables and logical constraints, which arise naturally in large-scale planning and operational decision support. The basic input to MODLER is a model file, and its basic output is a matrix file that is in a standard (MPS) format for most optimizers and for ANALYZE and RANDMOD. MODLER can also generate a syntax file for ANALYZE to enable automatic translation of activities and constraints into English for intelligent analysis support. The book is accompanied by a DOS version of MODLER on 3.5 inch diskettes and A Laboratory Manual for Teaching Linear Programming is available upon request.
Content Level »Research
Keywords »computer - decision support - linear optimization - management - modeling - programming
1. Overview, Installation, and Help. 2. Anatomy of a Linear Program. 3. Preliminaries. 4. Models and Instances. 5. Special Structures. 6. The SUM Expression. 7. Dependencies. 8. File Interfaces. 9. More Model Description. 10. Model Management. Appendix A: Troubleshooting. Appendix B: The MODLER Library. Index.