Re: Getting DF & IDF

2012-05-20 Thread yura.minsk
int numDocs = filterIndexReader.numDocs(); ... idf = Math.log10((double) numDocs / docFreq); Sethu_424 wrote > > wrong formula. numDoc should not be a count of documents in index - but documents containing searching term. We need something like IndexReader.docFreq( term ); -- View this messa

Re: Getting DF & IDF

2010-05-26 Thread Sethu_424
Hi, I am not sure if you are still searching the answer for your question. If so, then please read on... You can get the DF & IDF for each of the query terms in the query as below.. IndexReader reader = IndexReader.open(FSDirectory.open(new File(indexDir)), true); //Create a FilterInde

RE: Getting DF & IDF

2010-02-03 Thread Asif Nawaz
ve tried boolean query but unable to do this. > From: thienthanhom...@gmail.com > Date: Wed, 3 Feb 2010 04:59:49 +0900 > Subject: Re: Getting DF & IDF > To: java-user@lucene.apache.org > > with my idea, > using BooleanQuery, you can make every thing. > > > On M

Re: Getting DF & IDF

2010-02-02 Thread Phan The Dai
with my idea, using BooleanQuery, you can make every thing. On Mon, Feb 1, 2010 at 10:44 PM, Asif Nawaz wrote: > > Hi, I am new to use lucene, I have a query string of multiple terms. i) i > want to return query string by removing stop words and stemmed version of > the query. > ii) second i wa