[Crf-users] Why can not my test data work?

[Xiaowen P. <dor...@ya...>]

Hi Dear,=0A    I used the CRF code to generate the parameters successfully,=
 but when I read them in and apply to a new test data I got exceptions. I h=
ave 2 questions:=0A    1.How to prepare the parameter of the method: CRF.ap=
ply(DataSequence dataSeq). As for the DataSequence, there are two fields, x=
 and y. But in the test data, there should only be x logically. So,how to p=
repare this dataSeq (I have implemented the interface DataSequence).=0A  2.=
Why doesn't this kind of code work?=0A=0Apublic static void main(String[] a=
rgs) throws Exception {  =0A  CRFAppl crf =3D new CRFAppl();=0A............=
.=0A     crf.train();=0A     crf.test();=0A}=0A=0Apublic void train() throw=
s Exception {=0A     allocModel();=0A     double featureWts[] =3D crfModel.=
train(trainDataIter);=0A     crfModel.write(dataPath + "/crfOutput.txt");=
=0A     featureGen.write(dataPath + "/featureOutput.txt");=0A}=0A=0Apublic =
void test() throws Exception {=0A  allocModel();=0A  featureGen.read(dataPa=
th + "/featureOutput.txt");=0A  crfModel.read(dataPath + "/crfOutput.txt");=
=0A  crfModel.apply(testRecord);=0A  crfModel.write(dataPath + "/testOutput=
.txt");=0A}=0A=0Avoid  allocModel() throws Exception {=0A     featureGen =
=3D new FeatureGenImpl("naive", 8, true);=0A     featureGen.train(trainData=
Iter);=0A     crfModel=3Dnew CRF(8,featureGen, "numLabels 8");=0A}=0A=0AI g=
ot such exceptions:=0AException in thread "main" java.lang.NumberFormatExce=
ption: For input string: "Main,"=0A at java.lang.NumberFormatException.forI=
nputString(Unknown Source)=0A at java.lang.Integer.parseInt(Unknown Source)=
=0A at java.lang.Integer.parseInt(Unknown Source)=0A at iitb.Model.WordsInT=
rain.read(WordsInTrain.java:134)=0A at iitb.Model.FeatureGenImpl.read(Featu=
reGenImpl.java:363)=0A at app.CRFAppl.test(CRFAppl.java:164)=0A at app.CRFA=
ppl.main(CRFAppl.java:108)=0A=0AI tracked in but only find the key uses spa=
ce(" ") to seperate tokens but the trained data does not. Why does it happe=
n? or I have some misunderstandings?=0AAre these read mothods nessessary, i=
f I test it immediately after the train() method?=0A=0AThanks & Regards,=0A=
=0ADoris Pan=0A=0A=0A      ________________________________________________=
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