This research paper is limited to the User Interface of the modeling language of HELM (Hierarchical Environment for Linear Modeling). In attempt to better describe the user interface for HELM, some examples and portions of Carol Brown's report are included for ease of reading and a brief overview of the...
Several problems relating to linear programming modeling have
been identified: (1) model formulation, validation and explanation
are difficult and time consuming; (2) models must be frequently
updated and debugged; (3) flexibility is needed to specify the model
schema for a class of problems as a group; and (4) significant
differences...