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The APS Environment

Starting APS
 
The first step in using APS is launching it and opening existing files or creating new ones.

To Start Automatic Problem Solver 3.0

  1. In Windows 2000, click Start, point to Programs, and point to the Gepsoft Automatic Problem Solver 3.0 folder.
    The icons in the Gepsoft Automatic Problem Solver 3.0 folder appear in a list.
  2. Click the Automatic Problem Solver 3.0 program icon.
    The Welcome Screen appears. This welcome screen presents you with several choices, including start a new run or open an existing run.
  3. To start a new run, in the Welcome Screen choose the command New Run or click the Run menu and then choose New.
    The New Run Wizard appears. This wizard helps you gather the necessary information to start evolving a model.
  4. To open an existing run, in the Welcome Screen choose the command Open Run or click the Run menu and then choose Open.
    In the Report Panel you will find relevant information concerning this run, including all the settings used in the run, the statistical evaluation of the best-of-run or active model, and a detailed account of the evolutionary history of the run.


The Automatic Problem Solver 3.0 modeling environment contains eight basic panels:

  • Report Panel
  • Data Panel
  • Settings Panel
  • Functions Panel
  • Run Panel
  • History Panel
  • Results Panel
  • Model Panel

In the Report Panel you can find relevant information concerning the run, including all the settings used in the run, the statistical evaluation of the best-of-run or active model (highlighted in yellow in the History), and a detailed account of the evolutionary history of the run.







In the Data Panel you can visualize both the training and testing data, change a data set, or choose a subset of your data to use either for training or testing.

In the Settings Panel you can customize the General Settings, the Fitness Function, the Genetic Operators, and the Numerical Constants by selecting the corresponding tab.

In the General Settings Tab you can change the number of training and testing samples, the chromosome architecture, the linking function, the population size, and choose the parameters for the Complexity Increase Engine of APS.

In the Fitness Function Tab you can choose one of the 11 APS pre-defined fitness functions or design and test a fitness function of your own.

In the Genetic Operators Tab you can change the degree of genetic modification you want to use during evolution by choosing the kind of genetic operators and their corresponding rates.

In the Numerical Constants Tab you can activate the algorithm that enables the use of random numerical constants and customize both the type and range of your constants, the number of constants per gene, and also choose the genetic operators especially designed to fine-tune the random constants.

In the Functions Panel you choose the mathematical functions and rules APS will use to model your data.

In the Run Panel you can create and optimize models.

In the History Panel you can explore the best ancestors of the evolved model.

In the Results Panel you can evaluate the evolved model by analyzing its output both on the training and testing data.

In the Model Panel you can see the mathematical intricacies of the evolved model in several programming languages (C, C++, C#, Fortran, Java, Java Script, VB.Net, and Visual Basic) and representations (Expression Trees and Karva Notation).



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