You need to make sure you are indexing with Term Vectors in order for IndexReader.getTermFreqVector to return anything meaningful. You do not need to implement it.
QueryTermVector is meant to provide similar information to the Document side for Queries. For an example demo of indexing and using term vectors, go to http://www.cnlp.org/apachecon2005. All the examples are under Apache license and there is some documentation too. -Grant Daniel Noll wrote: > sog wrote: > >> en, but IndexReader.getTermFreqVector is an abstract method, I do not >> know how to implement it in an efficient way. Anyone has good advise? >> > > You probably don't need to implement it, it's been implemented already. > Just call the method. > > >> I can do it in this way: >> >> QueryTermVector vector= new QueryTermVector(Document.getValues(field)); >> freq = result.getTermFrequencies(); >> > > I'm not sure because I've never used QueryTermVector before, but the > fact that QueryTermVector doesn't take an IndexReader as a parameter is > a good indication that it can't tell you anything about the frequency of > the term in your documents. > > Daniel > > > > > -- ------------------------------------------------------------------- Grant Ingersoll Sr. Software Engineer Center for Natural Language Processing Syracuse University School of Information Studies 335 Hinds Hall Syracuse, NY 13244 http://www.cnlp.org Voice: 315-443-5484 Fax: 315-443-6886 --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
