Mailing-List: contact java-user-help@lucene.apache.org; run by ezmlm
Precedence: bulk
Reply-To: java-user@lucene.apache.org
Received-SPF: pass (athena.apache.org: local policy)
From: "Vijay Santhanam" <vijay@spectrumwired.com>
To: <java-user@lucene.apache.org>
References: <1185835808.37787.ezmlm@lucene.apache.org>
In-Reply-To: <1185835808.37787.ezmlm@lucene.apache.org>
Subject: Exact field searches
Date: Tue, 31 Jul 2007 18:23:04 +1000
Message-ID: <011601c7d34c$0423d1a0$0c6b74e0$@com>
MIME-Version: 1.0
Content-Type: text/plain;
	charset="us-ascii"
Content-Transfer-Encoding: 7bit
Thread-Index: AcfS++mIXKgULI/qQ6Wxk4++3uNJgQAUAFlg
Content-Language: en-au

Hi Guys,

Currently I construct a PrefixQuery to exact search through an index of
documents that represent Compact Discs, something like www.discogs.com.

On the search page, we offer a suggestion list as the user enters text, like
google suggest.
When a user selects an item out of this list, we mark the search as being an
"exact" search, because they know what they want.

An exact search wraps the name of the disc in a PrefixQuery and performs the
search.

But, I'm getting some unwanted results and I'm not sure which solution
approach to use.

In our dataset, there are hundreds of CDs with single English word titles.
Like, "Pink" and "Dust" and "Walk" etc.

If the user selects the "Pink" from the suggestion list, then CDs with
titles like "Pink Sunset", "A Pink lady", "Pink McPinkington", "Tomorrow the
Pink" appear in the results (along with the CDs just titled "Pink").

Obviously, the PhraseQuery finds instances of that phrase in the title
field, but I need to somehow exclude those titles that have a different
number of tokens from the query.

How do I make search for a specific number of tokens in a field?

Thanks for your help,

Vijay Santhanam
B.Eng.(Soft.)
Spectrum Wired - Software Engineer

T: +61 2 4925 3266
F: +61 2 4925 3255
M: +61 407 525 087
W: www.spectrumwired.com 


---------------------------------------------------------------------
To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
For additional commands, e-mail: java-user-help@lucene.apache.org