package net.bmahe.genetics4j.neat.spec.mutation;
   
   import org.apache.commons.lang3.Validate;
   import org.immutables.value.Value;
   
   import net.bmahe.genetics4j.core.spec.mutation.MutationPolicy;
   import net.bmahe.genetics4j.core.spec.statistics.distributions.Distribution;
   import net.bmahe.genetics4j.core.spec.statistics.distributions.NormalDistribution;
   import net.bmahe.genetics4j.core.spec.statistics.distributions.UniformDistribution;
  
  @Value.Immutable
  public abstract class NeatConnectionWeight implements MutationPolicy {
  
  	@Value.Default
  	public double populationMutationProbability() {
  		return 0.80;
  	}
  
  	@Value.Default
  	public double perturbationRatio() {
  		return 0.90;
  	}
  
  	@Value.Default
  	public Distribution perturbationDistribution() {
  		return NormalDistribution.of(0.0, 1.0);
  	}
  
  	@Value.Default
  	public Distribution newValuesDistribution() {
  		return UniformDistribution.build();
  	}
  
  	@Value.Check
  	protected void check() {
  		Validate.inclusiveBetween(0.0, 1.0, populationMutationProbability());
  	}
  
  	public static class Builder extends ImmutableNeatConnectionWeight.Builder {
  	}
  
  	public static NeatConnectionWeight build() {
  		return new Builder().build();
  	}
  
  	public static Builder builder() {
  		return new Builder();
  	}
  }