I want to use query parser to parse my query string
But the default field should be a group of fields with different fields
where it is searched on
Can any one let me know
For example if my query is
new books
new should be searched in different fields ( content and title)
books should be sear
Take a look at the class MultiFieldQueryParser, I think it does exactly
what you want.
GR,
Rainer
Raghavendra Prabhu wrote:
> I want to use query parser to parse my query string
>
> But the default field should be a group of fields with different fields
> where it is searched on
>
> Can any on
Signifies this that method collect can be called for document with score <=
0 ?
-Original Message-
From: Yonik Seeley [mailto:[EMAIL PROTECTED]
Sent: Tuesday, March 07, 2006 6:35 PM
To: java-user@lucene.apache.org
Subject: Re: Get only count
Importance: High
On 3/7/06, [EMAIL PROTECTED]
Hi Rainer
Thanks. I have one more doubt.
How do i set different boosts for each field using query parser
Can i set different boosts for each field?
Rgds
Prabhu
On 3/8/06, Rainer Dollinger <[EMAIL PROTECTED]> wrote:
>
> Take a look at the class MultiFieldQueryParser, I think it does exactly
> w
On Tue, Mar 07, 2006 at 06:19:53PM -0800, Chris Hostetter wrote:
> once you've tried the suggestions above, can you make send out a
> selfcontained JUnit test showing the problems?
Thanks, Chris, glad you agree that it doesn't work as you expect it to
work. I will try your suggestions and send in
: Thanks Chris for making it clear, I had read the comment but I had not
: understood that it implied incompatibility. But will the code be preserved
: in Lucene 2.0, in light of the comment contained in the Lucene 1.9.1
: announcement ?
I don't really know, it's currently being discussed in LUCE
thanks Chris, I think I'll opt for re-creating the index now, using the new
1.9.1 code. Sooner or later, it seems to me, the deprecated code will be
removed anyway. Better facing the pain now than later, makes it possible for
me to take advantage of the new date resolution features. Even though
Hi
I need different boosts for fields which we define in multifield query
parser
How can this be accomplished??
Rgds
Prabhu
What faster RangeQuery or RangeFilter ?
You could try to inherit from MultiFieldQueryParser:
public class BoostableMultiFieldQueryParser extends MultiFieldQueryParser {
// TODO: add constructors of super class
public static Query parse(String query, String[] fields,
BooleanClause.Occur[] flags,Analyzer analyzer, f
See
http://wiki.apache.org/jakarta-lucene/FilteringOptions
--- Anton Potehin <[EMAIL PROTECTED]> wrote:
> What faster RangeQuery or RangeFilter ?
>
>
___
Win a BlackBerry device from O2 with Yahoo!. Enter now.
http:
hi all,
i've been trying to load a 6GB index on linux (16GB RAM) but am having no
success.
i wrote a program that allocates memory and it was able to allocate as much
RAM as i requested (stopped at 12GB)
however
i am recieving the following stack trace:
JVMDUMP013I
Anyone have a doc or something that would allow me to explain this to execs? A
"Lucene Scoring for Dummies" idea...explaining math algo to a exec or someone
with no knowledge is not that easy :)
Thanks!
-Joe
On Wednesday 08 March 2006 09:25, [EMAIL PROTECTED] wrote:
> Signifies this that method collect can be called for document with score <=
> 0 ?
The collect() method is called after next() on the top level Scorer has
returned true. In between score() is called on that Scorer to provide the
score v
z shalev wrote:
hi all,
i've been trying to load a 6GB index on linux (16GB RAM) but am having no success.
i wrote a program that allocates memory and it was able to allocate as much RAM as i requested (stopped at 12GB)
Was your program that got up to 12GB of memory written
Hi,
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> Anyone have a doc or something that would allow me to explain
> this to execs? A "Lucene Scoring for Dummies"
> idea...explaining math algo to a exec or someone with no
> knowledge is not that easy :)
http://lucene.apache.org/java/d
yes,
100%
Dan Armbrust <[EMAIL PROTECTED]> wrote:
z shalev wrote:
> hi all,
>
> i've been trying to load a 6GB index on linux (16GB RAM) but am having no
> success.
>
> i wrote a program that allocates memory and it was able to allocate as much
> RAM as i requested (stopped at 12GB)
Hi,
I heard that Lucene loads the index into memory to do a search, which does
not sound quite right to me. I will not be surprised if Lucene is smart enough
to load
the index into memory when it is feasible, but I'd be surprised if it ALWAYS
loads index memory to do the search, which I
[EMAIL PROTECTED] wrote:
Anyone have a doc or something that would allow me to explain this to execs?
Roughly speaking:
* Documents containing *all* the search terms are good
* Matches on rare words are better than for common words
* Long documents are not as good as short ones
* Documents wh
Lucene _can_ load the index into memory, but it doesn't have to, if you
want further details see the Javadocs on RAMDirectory versus
FSDirectory. I think you will find it has good performance on a few
gigs of data. Results, of course, vary based on what you are asking it
to do and what kind o
: i am recieving the following stack trace:
:
: JVMDUMP013I Processed Dump Event "uncaught", detail
"java/lang/OutOfMemoryError".
: Exception in thread "main" java.lang.OutOfMemoryError
: at
org.apache.lucene.index.TermInfosReader.readIndex(TermInfosReader.java:82)
is it possible th
: Roughly speaking:
:
: * Documents containing *all* the search terms are good
: * Matches on rare words are better than for common words
: * Long documents are not as good as short ones
: * Documents which mention the search terms many times are good
Be wary of the distinction between "term" and
hey chris,
i will check and let you know just to make sure,
basically i see the OS allocating memory (up to about 4GB) while loading the
indexes to memory and then crashing on the TermInfosReader class. what i
noticed was that the crash occured when lucene tried to create a Term arra
z shalev wrote:
hey chris,
i will check and let you know just to make sure,
basically i see the OS allocating memory (up to about 4GB) while
loading the indexes to memory and then crashing on the
TermInfosReader class. what i noticed was that the crash occured
when lucene tried to create a
Hi,
Just wondering how I can rank search result by a combination of fields. I
know there is a multi-field sort, but it is just a sorting method. It is
sorted by the first field and then the second field ...
What I need is a weighted combination. For example, I want to assign a
weight of 2 to title
Hi Yang,
Boosting works at query time as well as index time.
If you are using the QueryParser, specify boosts like so:
title:foo^2 abstract:foo^1.5 date:mydate^3
If you are building queries pragmatically, then use the Query.setBoost() method.
That will boost relative to how a non-boosted query w
Hi All,
I am trying index and search a phrase (multiple words seperated by
spaces). How should i index it so that it remains atomic. I have
observed that if i index the phrase are keyword, lucene doesn't let me
retrive the phrase in search.
Please advice.
Urvashi
---
Hi Yonik,
Thanks very much for your suggestion. The query boost works great for
keyword matching. But in my case, I need to rank the results by date and
title. For example, title:foo^2 abstract:foo^1.5 date:2004^3 will only boost
the document with date=2004. What I need is boosting the "distance" f
Hello,
I would like to use a Filter for rangeQuery ( to avoid potential TooManyClauses
exception )
and found out
http://wiki.apache.org/jakarta-lucene/FilteringOptions
wiki said that FilteredQuery is best one.
But Interesting is that
when I used the option with HitCollector , FilteredQuery te
Hi,
That's somewhat strange, if I remember correctly the index size was 6
Gb, wasn't it?
I saw posts from people working with tens of Gb indexes. And we worked
with index of 8 Gb in 32-bit JVM (on Windows 2000) with as little as 700
Mb of max memory allowed to JVM.
Are there too many documents/t
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