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Posted to solr-user@lucene.apache.org by sunnyfr <jo...@gmail.com> on 2009/02/18 16:40:56 UTC
boost qf weight between 0 and 10
Hi,
I don't get really, I try to boost a field according to another one but I've
a huge weight when I'm using qf boost like :
/select?qt=dismax&fl=*&q="obama
meeting"&debugQuery=true&qf=title&bf=product(title,stat_views)
I will have :
5803681.0 = (MATCH) sum of:
4.9400806 = weight(title:"obama meet" in 8216294), product of:
0.98198587 = queryWeight(title:"obama meet"), product of:
16.098255 = idf(title: obama=7654 meet=7344)
0.06099952 = queryNorm
5.0307045 = fieldWeight(title:"obama meet" in 8216294), product of:
1.0 = tf(phraseFreq=1.0)
16.098255 = idf(title: obama=7654 meet=7344)
0.3125 = fieldNorm(field=title, doc=8216294)
0.40961993 = weight(text:"obama meet"~100^0.2 in 8216294), product of:
0.17883755 = queryWeight(text:"obama meet"~100^0.2), product of:
0.2 = boost
14.658932 = idf(text: obama=12446 meet=19052)
0.06099952 = queryNorm
2.2904582 = fieldWeight(text:"obama meet" in 8216294), product of:
1.0 = tf(phraseFreq=1.0)
14.658932 = idf(text: obama=12446 meet=19052)
0.15625 = fieldNorm(field=text, doc=8216294)
5803675.5 = (MATCH) FunctionQuery(product(ord(title),sint(stat_views))),
product of:
9.5142968E7 = product(ord(title)=1119329,sint(stat_views)=85)
1.0 = boost
0.06099952 = queryNorm
But this is not equilibrate between this boost in qf and bf, how can I do ?
Thanks a lot
--
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Re: boost qf weight between 0 and 10
Posted by sunnyfr <jo...@gmail.com>.
How can I get the weight of a field and use it in bf ??
thanks a lot
sunnyfr wrote:
>
> Hi Hoss,
> thanks for this answser, and is there a way to get the weight of a field ?
> like that and use it in the bf? queryWeight
>
>
> 0.14232224 = (MATCH) weight(text:chien^0.2 in 9412049), product of:
> 0.0813888 = queryWeight(text:chien^0.2), product of:
> 0.2 = boost
> 6.5946517 = idf(docFreq=55585, numDocs=14951742)
> 0.061708186 = queryNorm
>
>
> thanks
>
>
> hossman wrote:
>>
>>
>> : I don't get really, I try to boost a field according to another one but
>> I've
>> : a huge weight when I'm using qf boost like :
>> :
>> : /select?qt=dismax&fl=*&q="obama
>> : meeting"&debugQuery=true&qf=title&bf=product(title,stat_views)
>>
>> bf is a boost function -- you are using a product fucntion to multiply
>> the
>> "title" field by the stat_views" field ... this doesn't make sense to me?
>>
>> i'm assuming the "title" field contains text (the rest of your score
>> explanation confirms this). when you try to do a math function on a
>> string based field it deals with the "ordinal" value -- the higher the
>> string is lexigraphically compared to all other docs ,the higher the
>> ordinal value.
>>
>> i have no idea what's in your stat_views field -- but i can't imagine any
>> way in which multipling it by the ordinal value of your text field would
>> make sense...
>>
>> : 5803675.5 = (MATCH)
>> FunctionQuery(product(ord(title),sint(stat_views))),
>> : product of:
>> : 9.5142968E7 = product(ord(title)=1119329,sint(stat_views)=85)
>> : 1.0 = boost
>> : 0.06099952 = queryNorm
>>
>> : But this is not equilibrate between this boost in qf and bf, how can I
>> do ?
>>
>> when it comes to function query, you're on your own to figure out an
>> appropriate query boost to blanace the scores out -- when you use a
>> product function the scores are going to get huge like this unless you
>> balance it somehow (and that ord(title) is just making this massively
>> worse)
>>
>>
>> -Hoss
>>
>>
>>
>
>
--
View this message in context: http://www.nabble.com/boost-qf-weight-between-0-and-10-tp22081396p23293956.html
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Re: boost qf weight between 0 and 10
Posted by sunnyfr <jo...@gmail.com>.
Hi Hoss,
thanks for this answser, and is there a way to get the weight of a field ?
like that and use it in the bf? queryWeight
0.14232224 = (MATCH) weight(text:chien^0.2 in 9412049), product of:
0.0813888 = queryWeight(text:chien^0.2), product of:
0.2 = boost
6.5946517 = idf(docFreq=55585, numDocs=14951742)
0.061708186 = queryNorm
thanks
hossman wrote:
>
>
> : I don't get really, I try to boost a field according to another one but
> I've
> : a huge weight when I'm using qf boost like :
> :
> : /select?qt=dismax&fl=*&q="obama
> : meeting"&debugQuery=true&qf=title&bf=product(title,stat_views)
>
> bf is a boost function -- you are using a product fucntion to multiply the
> "title" field by the stat_views" field ... this doesn't make sense to me?
>
> i'm assuming the "title" field contains text (the rest of your score
> explanation confirms this). when you try to do a math function on a
> string based field it deals with the "ordinal" value -- the higher the
> string is lexigraphically compared to all other docs ,the higher the
> ordinal value.
>
> i have no idea what's in your stat_views field -- but i can't imagine any
> way in which multipling it by the ordinal value of your text field would
> make sense...
>
> : 5803675.5 = (MATCH)
> FunctionQuery(product(ord(title),sint(stat_views))),
> : product of:
> : 9.5142968E7 = product(ord(title)=1119329,sint(stat_views)=85)
> : 1.0 = boost
> : 0.06099952 = queryNorm
>
> : But this is not equilibrate between this boost in qf and bf, how can I
> do ?
>
> when it comes to function query, you're on your own to figure out an
> appropriate query boost to blanace the scores out -- when you use a
> product function the scores are going to get huge like this unless you
> balance it somehow (and that ord(title) is just making this massively
> worse)
>
>
> -Hoss
>
>
>
--
View this message in context: http://www.nabble.com/boost-qf-weight-between-0-and-10-tp22081396p23257545.html
Sent from the Solr - User mailing list archive at Nabble.com.
Re: boost qf weight between 0 and 10
Posted by Chris Hostetter <ho...@fucit.org>.
: I don't get really, I try to boost a field according to another one but I've
: a huge weight when I'm using qf boost like :
:
: /select?qt=dismax&fl=*&q="obama
: meeting"&debugQuery=true&qf=title&bf=product(title,stat_views)
bf is a boost function -- you are using a product fucntion to multiply the
"title" field by the stat_views" field ... this doesn't make sense to me?
i'm assuming the "title" field contains text (the rest of your score
explanation confirms this). when you try to do a math function on a
string based field it deals with the "ordinal" value -- the higher the
string is lexigraphically compared to all other docs ,the higher the
ordinal value.
i have no idea what's in your stat_views field -- but i can't imagine any
way in which multipling it by the ordinal value of your text field would
make sense...
: 5803675.5 = (MATCH) FunctionQuery(product(ord(title),sint(stat_views))),
: product of:
: 9.5142968E7 = product(ord(title)=1119329,sint(stat_views)=85)
: 1.0 = boost
: 0.06099952 = queryNorm
: But this is not equilibrate between this boost in qf and bf, how can I do ?
when it comes to function query, you're on your own to figure out an
appropriate query boost to blanace the scores out -- when you use a
product function the scores are going to get huge like this unless you
balance it somehow (and that ord(title) is just making this massively
worse)
-Hoss
Re: boost qf weight between 0 and 10
Posted by sunnyfr <jo...@gmail.com>.
Obviously it should be qb and not bf ???? it looks better.
Is there everything in the wiki because I read it but I'm still a bit
confused about it.
sunnyfr wrote:
>
> Hi,
>
> I don't get really, I try to boost a field according to another one but
> I've a huge weight when I'm using qf boost like :
>
> /select?qt=dismax&fl=*&q="obama
> meeting"&debugQuery=true&qf=title&bf=product(title,stat_views)
>
> I will have :
> 5803681.0 = (MATCH) sum of:
> 4.9400806 = weight(title:"obama meet" in 8216294), product of:
> 0.98198587 = queryWeight(title:"obama meet"), product of:
> 16.098255 = idf(title: obama=7654 meet=7344)
> 0.06099952 = queryNorm
> 5.0307045 = fieldWeight(title:"obama meet" in 8216294), product of:
> 1.0 = tf(phraseFreq=1.0)
> 16.098255 = idf(title: obama=7654 meet=7344)
> 0.3125 = fieldNorm(field=title, doc=8216294)
> 0.40961993 = weight(text:"obama meet"~100^0.2 in 8216294), product of:
> 0.17883755 = queryWeight(text:"obama meet"~100^0.2), product of:
> 0.2 = boost
> 14.658932 = idf(text: obama=12446 meet=19052)
> 0.06099952 = queryNorm
> 2.2904582 = fieldWeight(text:"obama meet" in 8216294), product of:
> 1.0 = tf(phraseFreq=1.0)
> 14.658932 = idf(text: obama=12446 meet=19052)
> 0.15625 = fieldNorm(field=text, doc=8216294)
> 5803675.5 = (MATCH) FunctionQuery(product(ord(title),sint(stat_views))),
> product of:
> 9.5142968E7 = product(ord(title)=1119329,sint(stat_views)=85)
> 1.0 = boost
> 0.06099952 = queryNorm
>
>
>
> But this is not equilibrate between this boost in qf and bf, how can I do
> ?
>
> Thanks a lot
>
>
--
View this message in context: http://www.nabble.com/boost-qf-weight-between-0-and-10-tp22081396p22081479.html
Sent from the Solr - User mailing list archive at Nabble.com.