// Sc = type of scores (e.g. Double)
sclass TunableParameters<Sc extends Comparable<Sc>> {
  settable IF1<MapSO, Sc> scoreFunction;
  
  abstract class Parameter<A> {
    settable S name;
    
    abstract A randomValue();
  }
  
  class IntRangeParameter extends Parameter<Int> {
    settable IntRange range;
    
    Int randomValue() { ret random(range); }
  }
  
  class DoubleRangeParameter extends Parameter<Double> {
    settable DoubleRange range;
    
    Double randomValue() { ret random(range); }
  }
  
  new LinkedHashMap<Sc, Parameter> parameters;
  
  selfType add(Parameter p) {
    parameters.put(p.name(), p);
    this;
  }
  
  MapSO randomInstance() {
    MapSO map = new LinkedHashMap;
    for (param : values(parameters))
      map.put(param.name(), param.randomValue());
    ret map;
  }
}