Hello Mike. Thanks for your reply. It's not an important issue. I'll waiting for next release version including this patch.
Thanks. 2013/1/4 Michael McCandless <luc...@mikemccandless.com> > The problem is that the TermVectorsFormat for the default codec > (Lucene40TermVectorsFormat) does not store this statistic > per-document, currently. We could in theory fix this ... maybe open > an issue / make a patch if it's important? > > -1 return value is actually "valid": it means this statistic is not > available. > > Mike McCandless > > http://blog.mikemccandless.com > > On Fri, Jan 4, 2013 at 2:39 AM, 장용석 <need4...@gmail.com> wrote: > > Hello. > > I have some questions. > > > > Document 1 : "learning perl learning java learning ruby" > > Document 2 : "perl test" > > > > I have indexed this documents, with StoreTermVectors(true) and > > IndexOptions.DOCS_AND_FREQS. > > Field name is "f". > > > > And I executed this code. > > > > IndexReader ir = IndexReader.open(dir); > > Terms terms = ir.getTermVector(0, "f"); > > > > System.out.println(terms.getDocCount()); -> 1 > > System.out.println(terms.getSumDocFreq()); -> 4 > > System.out.println(terms.getSumTotalTermFreq()); -> -1 > > > > I think this terms instance acts like a single-document inverted index. > > > > So getDocCount is 1 (single document), and getSumDocFreq is 4. (because > > each term's docFreq is 1) > > Is this right? > > > > But I can't understand why getSumTotalTermFreq method return -1. > > In javadoc getSumTotalTermFreq is sum of > > > TermsEnum.totalTermFreq<eclipse-javadoc:%E2%98%82=aboutLucene4/lib%5C/lucene-core-4.0.0.jar%3Corg.apache.lucene.index(Terms.class%E2%98%83Terms~getSumTotalTermFreq%E2%98%82TermsEnum%E2%98%82totalTermFreq> > > . > > > > I think in Document1, each term's totalTermFreqs are [learning, 3], > [java, > > 1], [perl, 1], [ruby, 1]. > > So getSumTotalTermFreq method's result is 6 not -1. > > > > Why temrs.getSumTotalTermFreq() method return -1? > > > > > > Thanks in advance. > > -- > > DEV용식 > > http://devyongsik.tistory.com > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > > -- DEV용식 http://devyongsik.tistory.com
