package gep.num;import ga.Evaluator;import ga.Fitness;import ga.Protein;import gep.Formula;/** * 數值評價器 */public class NEvaluator implements Evaluator{	private NFitness fitnessFunction;	// 適應度函數	private double[][] parameters;				// 訓練數據的參數		public NEvaluator(Fitness fitnessFunction, NDataSet dataSet)	{		this.fitnessFunction = (NFitness) fitnessFunction;		this.parameters = dataSet.getParameters();	}	/**	 * 評價，返回適應度	 * @param protein 待評價的"蛋白質"	 * @return 適應度值	 */	public double evaluate(Protein protein)	{		NEvaluable evaluable = (NEvaluable) protein;		int size = parameters.length;				// 計算每一個樣本的值		double[] model = new double[size];		for (int i=0; i<size; i++)		{			double[] sample = parameters[i];						// 模型計算值			try			{				model[i] = evaluable.evaluate(sample);			}			catch (Exception e)			{				return fitnessFunction.getMinFitness();			}		}				// 計算適應度		double f = fitnessFunction.calculate(model);		// TODO 測試"世界簡單性原理"		if (false) f += 1/((Formula) protein).getComplex();				return f;	}		public String toString()	{		return getClass().getName();	}}