@Override
 public PathSizeLogitSelector get() {
   return new PathSizeLogitSelector(
       config.getPathSizeLogitBeta(), -config.getBrainExpBeta(), network);
 }
 @Override
 public ExpBetaPlanChanger<Plan, Person> get() {
   return new ExpBetaPlanChanger<>(-config.getBrainExpBeta());
 }