The GA Procedure
- Overview
-
Getting Started
-
Syntax
PROC GA Statement ContinueFor Call Cross Call Dynamicarray Call EvaluateLC Call GetDimensions Call GetObjValues Call GetSolutions Call Initialize Call MarkPareto Call Mutate Call Objective Function PackBits Call Programming Statements ReadChild Call ReadCompare Call ReadMember Call ReadParent Call ReEvaluate Call SetBounds Call SetCompareRoutine Call SetCross Call SetCrossProb Call SetCrossRoutine Call SetElite Call SetEncoding Call SetFinalize Call SetMut Call SetMutProb Call SetMutRoutine Call SetObj Call SetObjFunc Call SetProperty Call SetSel Call SetUpdateRoutine Call ShellSort Call Shuffle Call UnpackBits Function UpdateSolutions Call WriteChild Call WriteMember Call
-
Details
Using Multisegment Encoding Using Standard Genetic Operators and Objective Functions Defining a User Fitness Comparison Routine Defining User Genetic Operators Defining a User Update Routine Defining an Objective Function Defining a User Initialization Routine Specifying the Selection Strategy Incorporating Heuristics and Local Optimizations Handling Constraints Optimizing Multiple Objectives
-
Examples
- References
| Creating the Initial Generation |
The last step in the initialization for the genetic algorithm optimization is to create the initial solution population, the first generation. The GA procedure provides you with the Initialize call to accomplish this task. The procedure provides several options for initializing the first population or reinitializing the solution population during the optimization process. For example, you can specify a data set in the FIRSTGEN= option of the PROC GA statement to be read to populate the initial generation, and use the initialize call:
call Initialize('_dataset_', PopulationSize);
Other possible initialization options include generating solutions uniformly distributed over the solution domain, executing a user-defined initialization routine, carrying over a portion of the previous population (for reinitialization), or any combination of those actions. See the section Initialize Call for a full explanation of initialization actions.