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## org.encog.ml.prg.generator
Class PrgGrowGenerator

    java.lang.Object
      org.encog.ml.prg.generator.AbstractPrgGenerator
          org.encog.ml.prg.generator.PrgGrowGenerator

All Implemented Interfaces:
  PopulationGenerator, PrgGenerator, MultiThreadable

    public class PrgGrowGenerator

extends AbstractPrgGenerator

The grow generator creates a random program by choosing a random node from both the "function and terminal" sets until the maximum depth is reached. Once the maximum depth is reached only nodes from terminal set are chosen. This algorithm was implemented as described in the following publication: Genetic programming: on the programming of computers by means of natural selection MIT Press Cambridge, MA, USA (c)1992 ISBN:0-262-11170-5

Constructor Summary
`PrgGrowGenerator(EncogProgramContext theContext, int theMaxDepth)` Construct the grow generator.

Method Summary
`ProgramNode` | `createNode(Random rnd, EncogProgram program, int depthRemaining, List<ValueType> types)` Create a random node for an Encog Program.

Methods inherited from class org.encog.ml.prg.generator.AbstractPrgGenerator
`addPopulationMember, attemptCreateGenome, createRandomNode, createTerminalNode, determineMaxDepth, generate, generate, generateRandomOpcode, getContext, getMaxConst, getMaxDepth, getMaxGenerationErrors, getMinConst, getRandomFactory, getScore, getThreadCount, isHasEnum, setMaxConst, setMaxGenerationErrors, setMinConst, setRandomFactory, setScore, setThreadCount`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### PrgGrowGenerator

    public PrgGrowGenerator(EncogProgramContext theContext,
                            int theMaxDepth)

  Construct the grow generator.

  Parameters:
    `theContext` - The program context.
    `theMaxDepth` - The max depth.

Method Detail

### createNode

    public ProgramNode createNode(Random rnd,
                                  EncogProgram program,
                                  int depthRemaining,
                                  List<ValueType> types)

  Create a random node for an Encog Program.

  Parameters:
    `rnd` - Random number generator.
    `program` - The program that the node should be generated for.
    `depthRemaining` - The depth remaining to generate.
    `types` - The types to generate.
  Returns:
    The newly created node.

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