> I am not analyzing the title > > Field titleField = new Field("title", article.getTitle(),Field.Store.YES, > Field.Index.NOT_ANALYZED);
OK. But the output you quote says "no match on required clause (title:List of newspapers in New York)" so something is out of synch somewhere. What does Luke show? See http://wiki.apache.org/lucene-java/LuceneFAQ#Why_am_I_getting_no_hits_.2BAC8_incorrect_hits.3F for more things to check. > Do you think booleanquery is the right approach for solving the problem > (finding lucene score of a word or a phrase in _a_ particular document)? Sounds OK to me. You could look at the contrib MemoryIndex as a possible alternative. -- Ian. > On Sep 21, 2011, at 1:00 PM, Ian Lea wrote: > >> How is the "title" field indexed? Seems likely it is analyzed in >> which case a TermQuery won't match because "list of newspapers in New >> York" would be analyzed into terms "list", "newspapers", "new", "york" >> assuming things were lowercased, stop words removed etc. >> >> Maybe you need your "word" as TermQuery, assuming it is lowercased >> etc., and pass the title through query parser. In other words, >> reverse what you've got for the two fields. >> >> As for performance, first narrow down where it is taking the time. If >> it is in lucene, read >> http://wiki.apache.org/lucene-java/ImproveSearchingSpeed >> >> >> -- >> Ian. >> >> On Wed, Sep 21, 2011 at 5:38 PM, Peyman Faratin <pey...@robustlinks.com> >> wrote: >>> Hi >>> >>> The problem I would like to solve is determining the lucene score of a word >>> in _a particular_ given document. The 2 candidates i have been trying are >>> >>> - QueryWrapperFilter >>> - BooleanQuery >>> >>> Both are to restrict search within a search space. But according to Doug >>> Cutting QueryWrapperFilter option is less preferable than Boolean Query. >>> However, I am experiencing both performance (very slow) and response >>> problems (query is not matched to any doc). >>> >>> The setup is as follows. Given a user query "word": >>> >>> QueryParser parser = new QueryParser(Version.LUCENE_32, "content",new >>> StandardAnalyzer(Version.LUCENE_32)); >>> Query query = parser.parse(word); >>> Document d = WikiIndexSearcher.doc(match.doc); >>> docTitle = d.get("title"); >>> TermQuery titleQuery = new TermQuery(new Term("title", docTitle)); >>> BooleanQuery bQuery = new BooleanQuery(); >>> bQuery.add(titleQuery, BooleanClause.Occur.MUST); >>> bQuery.add(query, BooleanClause.Occur.MUST); >>> TopDocs hits = WikiIndexSearcher.search(bQuery, 1); >>> >>> In other words, find a wikipedia doc with a particular title (in example >>> below it is "list of newspapers in New York >>> http://en.wikipedia.org/wiki/List_of_newspapers_in_New_York"). We then >>> create a boolean term query with that must match on the title and content >>> must match the user query ('american' in the example below). >>> >>> Here is the output of a run on user query "american" in a doc with title >>> "list of newspapers in New York"). >>> >>> ... QUERY: content:american >>> ... doc: List of newspapers in New York >>> ... query: +title:List of newspapers in New York +content:american >>> ... explanation 568744: 0.0 = (NON-MATCH) Failure to meet condition(s) of >>> required/prohibited clause(s) >>> 0.0 = no match on required clause (title:List of newspapers in New York) >>> 0.011818626 = (MATCH) weight(content:american in 212081), product of: >>> 0.15625292 = queryWeight(content:american), product of: >>> 2.4204094 = idf(docFreq=392249, maxDocs=1623450) >>> 0.0645564 = queryNorm >>> 0.075637795 = (MATCH) fieldWeight(content:american in 212081), product >>> of: >>> 1.0 = tf(termFreq(content:american)=1) >>> 2.4204094 = idf(docFreq=392249, maxDocs=1623450) >>> 0.03125 = fieldNorm(field=content, doc=212081) >>> >>> As you can see there is no match to the query (and hits.totalcounts is 0). >>> The search is very slow too. >>> >>> Any help would be much appreciated >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >> For additional commands, e-mail: java-user-h...@lucene.apache.org >> > > --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org