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Posted to dev@lucene.apache.org by Erick Erickson <er...@gmail.com> on 2010/11/22 15:42:39 UTC
Is this misleading?
This *extremely* helpful page:
http://wiki.apache.org/solr/FieldOptionsByUseCase?highlight=(termvector)|(retrieve)|(contents)
Says:
2. stored must always be true for highlighting. If you also add both *
termVector*s and termOffsets, this can be used to boost performance.
(Without *termVector*s/termOffsets, Solr needs to reanalyze the whole
document to perform highlighting.) If you furthermore add termPositions,
additional speedup may be possible. Note, that you must index the field in
order to be able to use *termVector*s, termOffsets and termPositions.
Is "document" correct here or should it be "field"? If the latter I'll
change it.
Erick
Re: Is this misleading?
Posted by Erick Erickson <er...@gmail.com>.
OK, fixed my problem, left Yonik's "for later".
Erick
On Mon, Nov 22, 2010 at 9:53 AM, Yonik Seeley <yo...@lucidimagination.com>wrote:
> On Mon, Nov 22, 2010 at 9:42 AM, Erick Erickson <er...@gmail.com>
> wrote:
> > This *extremely* helpful page:
> >
> http://wiki.apache.org/solr/FieldOptionsByUseCase?highlight=(termvector)|(retrieve)|(contents)
> > Says:
> > 2. stored must always be true for highlighting. If you also add
> > both termVectors and termOffsets, this can be used to boost performance.
> > (Without termVectors/termOffsets, Solr needs to reanalyze the whole
> document
> > to perform highlighting.) If you furthermore add termPositions,
> additional
> > speedup may be possible. Note, that you must index the field in order to
> be
> > able to use termVectors, termOffsets and termPositions.
> > Is "document" correct here or should it be "field"? If the latter I'll
> > change it.
>
> Right.
> It might also be clear if some of those "true" values with footnotes
> were changed to optional w/ footnote.
>
> At first glance, some of the termvector related features are also
> confusing. as in... "what? I need to enable termvectors to use
> tf*idf?" Not sure how to improve that though.
>
> -Yonik
> http://www.lucidimagination.com
>
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Re: Is this misleading?
Posted by Yonik Seeley <yo...@lucidimagination.com>.
On Mon, Nov 22, 2010 at 9:42 AM, Erick Erickson <er...@gmail.com> wrote:
> This *extremely* helpful page:
> http://wiki.apache.org/solr/FieldOptionsByUseCase?highlight=(termvector)|(retrieve)|(contents)
> Says:
> 2. stored must always be true for highlighting. If you also add
> both termVectors and termOffsets, this can be used to boost performance.
> (Without termVectors/termOffsets, Solr needs to reanalyze the whole document
> to perform highlighting.) If you furthermore add termPositions, additional
> speedup may be possible. Note, that you must index the field in order to be
> able to use termVectors, termOffsets and termPositions.
> Is "document" correct here or should it be "field"? If the latter I'll
> change it.
Right.
It might also be clear if some of those "true" values with footnotes
were changed to optional w/ footnote.
At first glance, some of the termvector related features are also
confusing. as in... "what? I need to enable termvectors to use
tf*idf?" Not sure how to improve that though.
-Yonik
http://www.lucidimagination.com
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RE: Is this misleading?
Posted by Uwe Schindler <uw...@thetaphi.de>.
It must be "field". So if you enable term verctors you can use
fast-vector-highighter, else the field must be stored to be highlighted and
the stored field must be reanalyzed.
-----
Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
<http://www.thetaphi.de/> http://www.thetaphi.de
eMail: uwe@thetaphi.de
From: Erick Erickson [mailto:erickerickson@gmail.com]
Sent: Monday, November 22, 2010 3:43 PM
To: solr-dev@lucene.apache.org
Subject: Is this misleading?
This *extremely* helpful page:
http://wiki.apache.org/solr/FieldOptionsByUseCase?highlight=(termvector)|(re
trieve)|(contents)
Says:
2. stored must always be true for highlighting. If you also add both
termVectors and termOffsets, this can be used to boost performance. (Without
termVectors/termOffsets, Solr needs to reanalyze the whole document to
perform highlighting.) If you furthermore add termPositions, additional
speedup may be possible. Note, that you must index the field in order to be
able to use termVectors, termOffsets and termPositions.
Is "document" correct here or should it be "field"? If the latter I'll
change it.
Erick