| Version 2.3 (R2008a) Genetic Algorithm and Direct Search Toolbox™ Software Release Notes | |
This table summarizes what's new in version 2.3 (R2008a):
| New Features and Changes | Version Compatibility Considerations | Fixed Bugs and Known Problems | Related Documentation at Web Site |
|---|---|---|---|
Yes | Yes | No | None |
New features and changes introduced in this version are described here:
Genetic Algorithm Tool and Pattern Search Tool Combined Into Optimization Tool
New Optimization Tool Support for gamultiobj, simulannealbnd, and threshacceptbnd
New Default StallTimeLimit Option = Inf in Genetic Algorithm
The functions ga, gamultiobj, and patternsearch can take advantage of parallel computing. Furthermore, applicable hybrid functions can use parallel computing. For more information, see the following sections in the User's Guide:
The Genetic Algorithm Tool and Pattern Search Tool GUIs have been combined into the Optimization Toolbox™ Optimization Tool GUI. To access these GUIs, enter optimtool at the command line and choose the appropriate solver.
The functions gatool and psearchtool continue to work, calling optimtool with the appropriate solver selected (ga or patternsearch). However, the functions gatool and psearchtool are no longer listed in the documentation.
The Optimization Tool GUI now includes the functions gamultiobj, simulannealbnd, and threshacceptbnd. Therefore, all Genetic Algorithm and Direct Search Toolbox solvers are supported in Optimization Tool. To access these GUIs, enter optimtool at the command line and choose the appropriate solver.
ga and gamultiobj can now create populations satisfying bounds and linear constraints, with well-dispersed populations, using the function gacreationlinearfeasible.
The previous creation function, gacreationuniform, is accessible by using gaoptimset to set CreationFcn to @gacreationuniform. The new default behavior is to use gacreationlinearfeasible when there are linear constraints, and gacreationuniform when there are bounds or no constraints.
The default value of StallTimeLimit in ga used to be 20. It was changed to Inf in order to avoid time-outs when using computationally intensive fitness functions.
Change StallTimeLimit to 20 using gaoptimset to get the previous behavior.
| Version 2.4 (R2008b) Genetic Algorithm and Direct Search Toolbox Software | Version 2.2 (R2007b) Genetic Algorithm and Direct Search Toolbox Software | |
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