Examples of jcgp.backend.function.FunctionSet

jcgp.backend.function.FunctionSet

FunctionSet encapsulates a group of functions. This is done to simplify the implementation of problem types.

FunctionSet contains a variety of useful methods for acquiring general information, such as the maximum arity across all functions and the total number of functions.

In addition, FunctionSet offers the ability to enable and disable functions. Accessing the functions through {@code getAllowedFunction()} will returnallowed functions only, providing an easy way to control which functions can be used in mutations.

An implementation of FunctionSet must simply use its constructor to set the name field and use {@code registerFunctions()} to add the requiredfunctions. @author Eduardo Pedroni

  private void refreshFunctions() {
    // remove all current functions
    nodeFunctions.getChildren().clear();
    CheckBox checkBox;
    // get a reference to the function set
    final FunctionSet functionSet = gui.getExperiment().getResources().getFunctionSet();
    for (int i = 0; i < functionSet.getTotalFunctionCount(); i++) {
      // add a checkbox for each function
      checkBox = new CheckBox(functionSet.getFunction(i).toString());
      checkBox.setId(String.valueOf(i));
      // make sure the selection matches the function set
      checkBox.setSelected(functionSet.isEnabled(functionSet.getFunction(i)));
      final int index = i;
      // set listener so function set gets updated if the checkboxes change
      checkBox.setOnAction(new EventHandler<ActionEvent>() {
        @Override
        public void handle(ActionEvent event) {
          if (((CheckBox) event.getSource()).isSelected()) {
            functionSet.enableFunction(index);
          } else {
            functionSet.disableFunction(index);
          }
          gui.updateFunctionSelector();
          revalidateParameters();
        }
      });

Examples of jcgp.backend.function.FunctionSet

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