code: package edu.cmu.tetrad.algcomparison.graph;
  
  import edu.cmu.tetrad.util.Parameters;
  import edu.cmu.tetrad.graph.Graph;
  import edu.cmu.tetrad.graph.GraphUtils;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * Creates a random graph by adding forward edges.
   *
   * @author jdramsey
   */
  public class RandomForward implements RandomGraph {
      static final long serialVersionUID = 23L;
  
      @Override
      public Graph createGraph(Parameters parameters) {
          return GraphUtils.randomGraphRandomForwardEdges(
                  parameters.getInt("numMeasures") + parameters.getInt("numLatents"),
                  parameters.getInt("numLatents"),
                  parameters.getInt("avgDegree") * parameters.getInt("numMeasures") / 2,
                  parameters.getInt("maxDegree"),
                  parameters.getInt("maxIndegree"),
                  parameters.getInt("maxOutdegree"),
                  parameters.getBoolean("connected"));
      }
  
      @Override
      public String getDescription() {
          return "Graph constructed by adding random forward edges";
      }
  
      @Override
      public List<String> getParameters() {
          List<String> parameters = new ArrayList<>();
          parameters.add("numMeasures");
          parameters.add("numLatents");
          parameters.add("avgDegree");
          parameters.add("maxDegree");
          parameters.add("maxIndegree");
          parameters.add("maxOutdegree");
          parameters.add("connected");
          return parameters;
      }
  }
  