InstanceSet trainset = new InstanceSet(pp,af);
InstanceSet testset = new InstanceSet(pp,af);
//用不同的Reader读取相应格式的文件
Reader reader = new DocumentReader(trainDataPath);
//读入数据,并进行数据处理
trainset.loadThruStagePipes(reader);
reader = new DocumentReader(testDataPath);
testset.loadThruStagePipes(reader);
/**