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Posted to user@lucenenet.apache.org by Laxmilal Menaria <lm...@chambal.com> on 2007/06/18 15:24:51 UTC
Phrase Search
Hello everyone,
I am lucene user and tried to implement pharse query, But now getting some
logical problems in searching..
My index have 4 fields: Name, Address & City and 6 docs.
i.e 1. "Laxmilal Menaria", "Hiran Magri", "Udaipur",
2. "Mohan Sharma", "Hiran Magri Sec 10", "Udaipur"
3. "Rohit Bhargav", "Suraj pole", "Udaipur"
4. "Laxmilal", "Hiran Magri Sec 4", "Ahemdabad"
5. "Chandresh" , "Bihar", "Patna"
6. "James", "Hiran Magri 18", "Delhi"
Now search Address:"Hiran Magri" and got 4 results, But I want 1 result
only(Document-1), so what should I do ?
My Search code is :
sQuery="Hiran Magri"
.
.
Dim lucQuery As Lucene.Net.Search.Query = New
Lucene.Net.QueryParsers.QueryParser("Address", New
Lucene.Net.Analysis.Standard.StandardAnalyzer).Parse(sQuery)
Dim lucHits As Lucene.Net.Search.Hits =
lucIndexSearcher.Search(lucQuery)
Dim intHitCount As Integer = lucHits.Length
--
Thanks,
Laxmilal menaria
http://www.minalyzer.com/
http://www.chambal.com/
Re: Phrase Search
Posted by Laxmilal Menaria <lm...@chambal.com>.
Ok.. thanks, I have tried to index address field as UN_TOKENIZED and search
using above query, its return Nothing, How can I specified " NOT tokenize"
in query..
--Thanks,
On 6/18/07, Erick Erickson <er...@gmail.com> wrote:
>
> Phrase queries won't help you here....
>
> Your particular issue can be addressed, but I'm not sure it's a
> reasonable long-term solution....
>
> If you indexed your address field as UN_TOKENIZED, and
> did NOT tokenize your query, it should give you what you want.
> What's happening is that StandardAnalyzer is indexing indivdual
> tokens, not phrases. So, doc 1 has the tokens
> "hiran", "margi"
>
> Doc 2 has tokens.
> "hiran", "magri", "sec", and "10"
>
> and so on...
>
> Searching, even for phrases, on "hiran margi" matches
> 4 docs because those two tokens appear next to each other.
>
> If, on the other hand, you index your address field UN_TOKENIZED,
> then doc1 has a "token" of "hiran margi", while doc 2 has a token
> of "hiran magri sec 10". Doc2 won't match a query on
> "hiran margi" etc.
>
> But, this may not be a good solution because searching on
> "hiran" won't match *any* document. You might have to index
> the same fields two different ways to get all the behavior you
> want.
>
> Best
> Erick
>
> On 6/18/07, Laxmilal Menaria <lm...@chambal.com> wrote:
> >
> > Hello everyone,
> >
> > I am lucene user and tried to implement pharse query, But now getting
> some
> > logical problems in searching..
> >
> > My index have 4 fields: Name, Address & City and 6 docs.
> > i.e 1. "Laxmilal Menaria", "Hiran Magri", "Udaipur",
> > 2. "Mohan Sharma", "Hiran Magri Sec 10", "Udaipur"
> > 3. "Rohit Bhargav", "Suraj pole", "Udaipur"
> > 4. "Laxmilal", "Hiran Magri Sec 4", "Ahemdabad"
> > 5. "Chandresh" , "Bihar", "Patna"
> > 6. "James", "Hiran Magri 18", "Delhi"
> >
> > Now search Address:"Hiran Magri" and got 4 results, But I want 1 result
> > only(Document-1), so what should I do ?
> >
> > My Search code is :
> > sQuery="Hiran Magri"
> > .
> > .
> > Dim lucQuery As Lucene.Net.Search.Query = New
> > Lucene.Net.QueryParsers.QueryParser("Address", New
> > Lucene.Net.Analysis.Standard.StandardAnalyzer).Parse(sQuery)
> > Dim lucHits As Lucene.Net.Search.Hits =
> > lucIndexSearcher.Search(lucQuery)
> > Dim intHitCount As Integer = lucHits.Length
> >
> >
> > --
> > Thanks,
> > Laxmilal menaria
> >
> > http://www.minalyzer.com/
> > http://www.chambal.com/
> >
>
--
Thanks,
Laxmilal menaria
http://www.minalyzer.com/
http://www.chambal.com/
Re: Phrase Search
Posted by Chris Hostetter <ho...@fucit.org>.
: Another good old trick is to index field values (tokenized) with
: appended special starting and ending tokens, e.g. instead of "Hiran
: Magri" use "_start_ Hiran Magri _end_". Then you can query for fields
: that are exactly equal to a phrase, while still retaining the
: possibility to search by individual terms and phrases not equal to the
: field value.
or build a SpanNearQuery, and then put it inside a SpanFirst query
configured to be as long as the number of terms (+desired
slop) in the SpanNearQuery.
-Hoss
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Re: Phrase Search
Posted by Andrzej Bialecki <ab...@getopt.org>.
Erick Erickson wrote:
> Phrase queries won't help you here....
>
> Your particular issue can be addressed, but I'm not sure it's a
> reasonable long-term solution....
>
> If you indexed your address field as UN_TOKENIZED, and
> did NOT tokenize your query, it should give you what you want.
> What's happening is that StandardAnalyzer is indexing indivdual
> tokens, not phrases. So, doc 1 has the tokens
> "hiran", "margi"
>
> Doc 2 has tokens.
> "hiran", "magri", "sec", and "10"
>
> and so on...
>
> Searching, even for phrases, on "hiran margi" matches
> 4 docs because those two tokens appear next to each other.
>
> If, on the other hand, you index your address field UN_TOKENIZED,
> then doc1 has a "token" of "hiran margi", while doc 2 has a token
> of "hiran magri sec 10". Doc2 won't match a query on
> "hiran margi" etc.
>
> But, this may not be a good solution because searching on
> "hiran" won't match *any* document. You might have to index
> the same fields two different ways to get all the behavior you
> want.
Another good old trick is to index field values (tokenized) with
appended special starting and ending tokens, e.g. instead of "Hiran
Magri" use "_start_ Hiran Magri _end_". Then you can query for fields
that are exactly equal to a phrase, while still retaining the
possibility to search by individual terms and phrases not equal to the
field value.
--
Best regards,
Andrzej Bialecki <><
___. ___ ___ ___ _ _ __________________________________
[__ || __|__/|__||\/| Information Retrieval, Semantic Web
___|||__|| \| || | Embedded Unix, System Integration
http://www.sigram.com Contact: info at sigram dot com
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Re: Phrase Search
Posted by Erick Erickson <er...@gmail.com>.
Phrase queries won't help you here....
Your particular issue can be addressed, but I'm not sure it's a
reasonable long-term solution....
If you indexed your address field as UN_TOKENIZED, and
did NOT tokenize your query, it should give you what you want.
What's happening is that StandardAnalyzer is indexing indivdual
tokens, not phrases. So, doc 1 has the tokens
"hiran", "margi"
Doc 2 has tokens.
"hiran", "magri", "sec", and "10"
and so on...
Searching, even for phrases, on "hiran margi" matches
4 docs because those two tokens appear next to each other.
If, on the other hand, you index your address field UN_TOKENIZED,
then doc1 has a "token" of "hiran margi", while doc 2 has a token
of "hiran magri sec 10". Doc2 won't match a query on
"hiran margi" etc.
But, this may not be a good solution because searching on
"hiran" won't match *any* document. You might have to index
the same fields two different ways to get all the behavior you
want.
Best
Erick
On 6/18/07, Laxmilal Menaria <lm...@chambal.com> wrote:
>
> Hello everyone,
>
> I am lucene user and tried to implement pharse query, But now getting some
> logical problems in searching..
>
> My index have 4 fields: Name, Address & City and 6 docs.
> i.e 1. "Laxmilal Menaria", "Hiran Magri", "Udaipur",
> 2. "Mohan Sharma", "Hiran Magri Sec 10", "Udaipur"
> 3. "Rohit Bhargav", "Suraj pole", "Udaipur"
> 4. "Laxmilal", "Hiran Magri Sec 4", "Ahemdabad"
> 5. "Chandresh" , "Bihar", "Patna"
> 6. "James", "Hiran Magri 18", "Delhi"
>
> Now search Address:"Hiran Magri" and got 4 results, But I want 1 result
> only(Document-1), so what should I do ?
>
> My Search code is :
> sQuery="Hiran Magri"
> .
> .
> Dim lucQuery As Lucene.Net.Search.Query = New
> Lucene.Net.QueryParsers.QueryParser("Address", New
> Lucene.Net.Analysis.Standard.StandardAnalyzer).Parse(sQuery)
> Dim lucHits As Lucene.Net.Search.Hits =
> lucIndexSearcher.Search(lucQuery)
> Dim intHitCount As Integer = lucHits.Length
>
>
> --
> Thanks,
> Laxmilal menaria
>
> http://www.minalyzer.com/
> http://www.chambal.com/
>