说明：  我把LibSVM库中的GridSearch方法在VC6.0下实现，主要进行SVM中模型参数的选择，modelSelection，写成了子函数的形式，可以直接调用，与大家共享，欢迎提出宝贵意见
(I LibSVM library GridSearch method under VC6.0, SVM mainly in the choice of model parameters, modelSelection, written in the form of Functions can be called directly with the U.S. to share are welcome to put forward valuable suggestions)