// Pipe segpp=new CNPipe(tag);
//将字符特征转换成字典索引
Pipe indexpp = new StringArray2IndexArray(af);
Pipe sparsepp=new StringArray2SV(af);
//将目标值对应的索引号作为类别
Pipe targetpp = new Target2Label(af.DefaultLabelAlphabet());
//建立pipe组合
SeriesPipes pp = new SeriesPipes(new Pipe[]{ngrampp,targetpp,sparsepp});
InstanceSet instset = new InstanceSet(pp,af);