Thank you Erick. I am totally aware that Lucene uses inverted index (class: IndexWriter). I have read in the literature about new efficient indexes that are created to handle phrases indexing, so I wondered if there are some updates or new classes added to Lucene for that reason.
The problem that I am trying to solve is : How to index phrases (rather than phrase querying)? I have a Questions/Answers corpus, the architecture I am using for IR creates one index for questions and another one for answers (based on single terms) and then matches between them. I want to index phrases in addition to single terms (for both questions and answers) and then make a search for all terms and phrases in the questions index. If you have any idea how I can solve this problem of indexing phrases, it would be of great help. Nada Mimouni -----Original Message----- From: Erick Erickson [mailto:erickerick...@gmail.com] Sent: Tue 2/24/2009 2:13 PM To: java-user@lucene.apache.org Subject: Re: Lucene indexes I have to ask why do you care? Which is another way of asking what problem you're trying to solve that you think this information would help with. As far as I know Lucene is an inverted index, period. You use IndexWriter to create it. Really the best way to get a sense for which classes to use is to work through some of the examples in Lucene In Action or on the website. This may help as far as the structure of the index is concerned: http://lucene.apache.org/java/2_4_0/fileformats.html Best Erick On Tue, Feb 24, 2009 at 5:36 AM, Nada Mimouni < mimo...@tk.informatik.tu-darmstadt.de> wrote: > > Hello everybody, > > 1) What is the difference between : > - inverted index > - nextword index > - common index > > 2) Which one(s) is(are) supported by Lucene? > > 3) Which class(es) create this(those) index(es)? > > > Thank you in advance for your help. > Nada Mimouni > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > >
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