Hi, For term vectors enum the doc freq is always 1 and the term freq is the one from the document you got term vectors.
Term vectors just implement the same interface, but they can be seen as a small index per document. This is made like that to allow executing queries for highlighting on single document. Uwe Am 20. September 2015 16:28:12 MESZ, schrieb Ziqi Zhang <ziqi.zh...@sheffield.ac.uk>: >Thanks but TermsEnum has two methods that returns frequency-related >info, both are corpus-level, not document specific: > >-docFreq() Returns the number of documents containing the current term. >-totalTermFreq() Returns the total number of occurrences of this term >across all documents (the sum of the freq() for each doc that has this >term). > >However I will need document specific frequency, i.e., freq of term A >in >Doc 1, 2, ... N > >Thanks > >On 20/09/2015 15:07, Uwe Schindler wrote: >> Hi, >> >> With the terms enum you can iterate over all terms. Each one returns >its term frequency. Of course, you need to enable term vectors during >indexing. The pattern how to use terms enum can be looked up at various >places in Lucene source code. It's a very expert API but it is the way >to go here. >> >> Uwe >> >> Am 20. September 2015 15:35:40 MESZ, schrieb Ziqi Zhang ><ziqi.zh...@sheffield.ac.uk>: >>> Hi >>> >>> Is it possible to get a list of terms within a document, and also TF >of >>> >>> each of these terms *in that document only*? (Lucene 5.3) >>> >>> IndexReader has a method "Terms getTermVector(int docID, String >>> field)", >>> which gives me a "Terms" object, on which I can get a TermsEnum. But >I >>> do not know where to go then. >>> >>> thanks >> -- >> Uwe Schindler >> H.-H.-Meier-Allee 63, 28213 Bremen >> http://www.thetaphi.de > > >-- >Ziqi Zhang >Research Associate >Department of Computer Science >University of Sheffield > > >--------------------------------------------------------------------- >To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >For additional commands, e-mail: java-user-h...@lucene.apache.org -- Uwe Schindler H.-H.-Meier-Allee 63, 28213 Bremen http://www.thetaphi.de
