case 1:
stag = new CWSTagger("../models/seg.m");
System.out.println("分词");
break;
case 2:
ttag = new POSTagger("../models/seg.m","../models/pos.m");
System.out.println("词性标注");
break;
case 3:
ttag = new POSTagger("../models/seg.m","../models/pos.m");
parser = new JointParser("../models/dep.m");
System.out.println("句法分析");
break;
case 4:
normalizer = new TimeNormalizer("../models/time.m");