Karl Koch wrote:
Are there any other papers that regard the combination of coordination level matching and TFxIDF as advantageous?
We independently developed coordination-level matching combined with
TFxIDF when I worked at Apple. This is documented in:
http://www.informatik.uni-trier.de/~
FYI: The Wiki has a fair number of resources on IR: http://
wiki.apache.org/jakarta-lucene/InformationRetrieval (I have added a
link to this conversation, which contains a lot of useful information)
Karl, if you are so inclined, please feel free to add any of the
references you have found t
Soeren Pekrul wrote:
The score for a document is the sum of the term weights w(tf, idf) for
each containing term. So you have already the combination of
coordination level matching with IDF. Now it is possible that your query
requests three terms A, B and C. Two of them (A and B) are quite ofte
: java-user@lucene.apache.org
Betreff: Re: Lucene scoring: coord_q_d factor
> Karl Koch wrote:
> > If I do not misunderstand that extract, I would say it suggests the
> combination of coordination level matching with IDF. I am interested in your
> view and those who read this?
&
Karl Koch wrote:
If I do not misunderstand that extract, I would say it suggests the combination of coordination level matching with IDF. I am interested in your view and those who read this?
I understand that sentence:
"The natural solution is to correlate a term's matching value with its
co
:35:55 PM
Subject: Re: Lucene scoring: coord_q_d factor
Hello Paul,
thank you for providing the link to that paper. I read it again, and you are
right. I discovered the following text part:
"In normal term co-ordination matches, if a request and document have a
frequent term in common, th
her papers that regard the combination of coordination level
matching and TFxIDF as advantageous?
Cheers,
Karl
Original-Nachricht
Datum: Wed, 13 Dec 2006 21:00:45 +0100
Von: Paul Elschot <[EMAIL PROTECTED]>
An: java-user@lucene.apache.org
Betreff: Re: Lucene scoring: c
On Wednesday 13 December 2006 16:42, Karl Koch wrote:
> Do you know about any papers that discuss this?
Coordination is called co-ordination In the original idf paper by
K. Spärck Jones, A statistical interpretation of term specificity
and its application in retrieval., Journal of Documentation 2
Do you know about any papers that discuss this?
Karl
Original-Nachricht
Datum: Wed, 13 Dec 2006 10:31:41 -0500
Von: "Yonik Seeley" <[EMAIL PROTECTED]>
An: java-user@lucene.apache.org
Betreff: Re: Lucene scoring: coord_q_d factor
> On 12/13/06, Karl Koc
On 12/13/06, Karl Koch <[EMAIL PROTECTED]> wrote:
To me, it seems that coordination level matching could be used if I don't want to use
TFxIDF but not together with it. In this context, I wonder what benefit the
"coordination level matching" has in combination with TFxIDF?
Well, if I search f
ble explaination (perhaps augmented with some evidence in
literature) that makes it clear why it is used together with TFxIDF.
Thank you,
Karl
Original-Nachricht
Datum: Tue, 12 Dec 2006 17:15:48 -0500
Von: Steven Rowe <[EMAIL PROTECTED]>
An: java-user@lucene.apache.org
Karl Koch wrote:
> Is there any other paper that actually shows the benefit of doing
> this particular normalisation with coord_q_d? I am not suggesting
> here that it is not useful, I am just looking for evidence how the
> idea developed.
I think it's a mischaracterization to call coordination a
: java-user@lucene.apache.org
Betreff: Re: Lucene scoring: coord_q_d factor
> Karl Koch wrote:
> > The coord(q,d) normalisation is "a score factor based on how many of
> > the query terms are found in the specified document." and described
> > here:
> >
>
Karl Koch wrote:
> The coord(q,d) normalisation is "a score factor based on how many of
> the query terms are found in the specified document." and described
> here:
>
> http://lucene.apache.org/java/docs/api/org/apache/lucene/search/Similarity.html#formula_coord
>
> Does this have a theoretical
14 matches
Mail list logo
