Model Pane

 

Model Summary

The top of the pane summarizes the model as it is currently defined. Each row reflects a section of the RASON model and updates automatically as the model is edited.

RASON Desktop:  Model pane as shown displaying optimization, simulation, data science and calculation models.

Optimization Simulation Data Science Calculation Any model type
Node Applies to Description
Model Name Any The root node shows the model name and the model type (optimization, simulation, calculation, or datamining).
Objective Opt Displays the objective formula and its sense for an optimization model.
Variables Opt The number of decision variables defined in the optimization model.
Constraints Opt The number of constraints defined in the optimization model.
Uncertain Variables Sim The number of uncertain variables defined in the simulation model.
Uncertain Functions Sim The number of uncertain functions defined in the simulation model.
Data entries Any The number of data objects or arrays defined in the data section of any model type.
Formulas Any The number of intermediate formulas defined in the formulas section of any model type.

Diagnosis Results

The Diagnosis Results branch appears after a model diagnosis is performed on an optimization or simulation model (only). Diagnosis classifies the model and reports the characteristics that determine which Solver engine can be used.

Applies to: Optimization Simulation

Node Applies to Description
Type Opt Sim The problem class identified by the diagnosis.
Model Type Opt The diagnosed structure of an optimization model. This field does not appear for simulation models. LP Convex indicates a linear, convex program, which can be solved by the fast and reliable linear programming engine. Other classifications for optimization models include LP/MIP, QP, NLP, and Non-Convex.
Variables Opt The total count of decision variables in the optimization model seen by the diagnosis.
Linear Vars Opt The number of variables that appear in the optimization model, only in linear terms.
Smooth Vars Opt The number of variables that appear in smooth (continuous, differentiable) nonlinear functions, in the optimization model.
Integers Opt The number of variables constrained to integer values in the optimization model.
All Functions Opt The total number of functions in the optimization model, counting the objective and all constraints.
Linear Functions Opt The number of those functions that are linear. When this equals All Functions, the model is fully linear. (Optimization models only.)
Sparsity Opt The percentage of zero coefficients in the model’s coefficient matrix. Higher sparsity generally allows faster solves. (Optimization models only.)
Uncertain Variables Sim The number of uncertain variables appearing in the simulation model.
Uncertain Functions Sim The number of uncertain functions appearing in the simulation model.
Warnings (n) Opt Sim An expandable branch listing any warnings raised during diagnosis. The number in parentheses is the warning count.

Note: The Diagnosis Results and Warnings branches are only shown after a diagnosis has been run. Before diagnosis, the pane displays the model summary only.