public void normalize()
	{
		float[] max = new float[FieldCount];// 找最大值
		for (int i = 0; i < InstanceNumber; i++)
		{
			for (int j = 0; j < FieldCount; j++)
			{
				if (data[i][j] > max[j])
					max[j] = data[i][j];
			}
		}
		// 归一化
		for (int i = 0; i < InstanceNumber; i++)
		{
			for (int j = 0; j < FieldCount; j++)
			{
				data[i][j] = data[i][j] / max[j];
			}
		}
	}