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Posted to solr-user@lucene.apache.org by Alexander Ramos Jardim <al...@gmail.com> on 2011/06/22 11:30:33 UTC
Understanding query explain information
Hi guys,
I am getting some doubts about how to correctly understand the debugQuery
output. I have a field named itemName in my index. This is a text field,
just that. When I quqery a simple ?q=itemName:iPad , I end up with the
following query result.
Simply trying to understand why these strings generated such scores, and as
far as I can understand, the only difference between them is the field
norms, as all the other results maintain themselves.
Now, how do I get these field norm values? Field Norm is the result of this
formula right?
*1/square root of (terms)*,* where terms is the number of terms in my field
> after it is indexed*
>
Well, if this is true, the field norm for my first document should be 0.5
(1/sqrt(4)) as "Livro - IPAD - O Guia do Profissional" ends up with the
terms "livro|ipad|guia|profissional" as tokens.
What I am forgetting to take into account?
<?xml version="1.0" encoding="UTF-8"?>
<response>
<lst name="responseHeader">
<int name="status">0</int>
<int name="QTime">3</int>
<lst name="params">
<str name="debugQuery">on</str>
<str name="start">0</str>
<str name="rows">10</str>
<arr name="indent">
<str>on</str>
<str>on</str>
</arr>
<str name="fl">itemName,score</str>
<str name="version">2.2</str>
<str name="q">itemName:ipad</str>
</lst>
</lst>
<result name="response" numFound="161" start="0" maxScore="3.6808658">
<doc>
<float name="score">3.6808658</float>
<str name="itemName">Livro - IPAD - O Guia do Profissional</str>
</doc>
<doc>
<float name="score">3.1550279</float>
<str name="itemName">Leitor de Cartão para Ipad - Mobimax</str>
</doc>
<doc>
<float name="score">3.1550279</float>
<str name="itemName">Sleeve para iPad</str>
</doc>
<doc>
<float name="score">3.1550279</float>
<str name="itemName">Sleeve de Neoprene para iPad</str>
</doc>
<doc>
<float name="score">3.1550279</float>
<str name="itemName">Carregador de parede para iPad</str>
</doc>
<doc>
<float name="score">2.6291897</float>
<str name="itemName">Case Envelope para iPad - Black - Built NY</str>
</doc>
<doc>
<float name="score">2.6291897</float>
<str name="itemName">Case Protetora p/ IPad de Silicone Duo - Browm
- Iskin</str>
</doc>
<doc>
<float name="score">2.6291897</float>
<str name="itemName">Case Protetora p/ IPad de Silicone Duo - Clear
- Iskin</str>
</doc>
<doc>
<float name="score">2.6291897</float>
<str name="itemName">Case p/ iPad Sleeve - Black - Built NY</str>
</doc>
<doc>
<float name="score">2.6291897</float>
<str name="itemName">Bolsa de Proteção p/ iPad Preta - Geonav</str>
</doc>
</result>
<lst name="debug">
<str name="rawquerystring">itemName:ipad</str>
<str name="querystring">itemName:ipad</str>
<str name="parsedquery">itemName:ipad</str>
<str name="parsedquery_toString">itemName:ipad</str>
<lst name="explain">
<str name="7369507">
3.6808658 = (MATCH) fieldWeight(itemName:ipad in 102507), product of:
1.0 = tf(termFreq(itemName:ipad)=1)
8.413407 = idf(docFreq=165, maxDocs=275239)
0.4375 = fieldNorm(field=itemName, doc=102507)
</str>
<str name="7391111">
3.1550279 = (MATCH) fieldWeight(itemName:ipad in 226401), product of:
1.0 = tf(termFreq(itemName:ipad)=1)
8.413407 = idf(docFreq=165, maxDocs=275239)
0.375 = fieldNorm(field=itemName, doc=226401)
</str>
<str name="7356941">
3.1550279 = (MATCH) fieldWeight(itemName:ipad in 226409), product of:
1.0 = tf(termFreq(itemName:ipad)=1)
8.413407 = idf(docFreq=165, maxDocs=275239)
0.375 = fieldNorm(field=itemName, doc=226409)
</str>
<str name="7356931">
3.1550279 = (MATCH) fieldWeight(itemName:ipad in 226447), product of:
1.0 = tf(termFreq(itemName:ipad)=1)
8.413407 = idf(docFreq=165, maxDocs=275239)
0.375 = fieldNorm(field=itemName, doc=226447)
</str>
<str name="7360321">
3.1550279 = (MATCH) fieldWeight(itemName:ipad in 226583), product of:
1.0 = tf(termFreq(itemName:ipad)=1)
8.413407 = idf(docFreq=165, maxDocs=275239)
0.375 = fieldNorm(field=itemName, doc=226583)
</str>
<str name="7428354">
2.6291897 = (MATCH) fieldWeight(itemName:ipad in 223178), product of:
1.0 = tf(termFreq(itemName:ipad)=1)
8.413407 = idf(docFreq=165, maxDocs=275239)
0.3125 = fieldNorm(field=itemName, doc=223178)
</str>
<str name="7366074">
2.6291897 = (MATCH) fieldWeight(itemName:ipad in 223196), product of:
1.0 = tf(termFreq(itemName:ipad)=1)
8.413407 = idf(docFreq=165, maxDocs=275239)
0.3125 = fieldNorm(field=itemName, doc=223196)
</str>
<str name="7366068">
2.6291897 = (MATCH) fieldWeight(itemName:ipad in 223831), product of:
1.0 = tf(termFreq(itemName:ipad)=1)
8.413407 = idf(docFreq=165, maxDocs=275239)
0.3125 = fieldNorm(field=itemName, doc=223831)
</str>
<str name="7428358">
2.6291897 = (MATCH) fieldWeight(itemName:ipad in 223856), product of:
1.0 = tf(termFreq(itemName:ipad)=1)
8.413407 = idf(docFreq=165, maxDocs=275239)
0.3125 = fieldNorm(field=itemName, doc=223856)
</str>
<str name="7422680">
2.6291897 = (MATCH) fieldWeight(itemName:ipad in 223908), product of:
1.0 = tf(termFreq(itemName:ipad)=1)
8.413407 = idf(docFreq=165, maxDocs=275239)
0.3125 = fieldNorm(field=itemName, doc=223908)
</str>
</lst>
<str name="QParser">LuceneQParser</str>
<lst name="timing">
<double name="time">3.0</double>
<lst name="prepare">
<double name="time">1.0</double>
<lst name="org.apache.solr.handler.component.QueryComponent">
<double name="time">1.0</double>
</lst>
<lst name="org.apache.solr.handler.component.FacetComponent">
<double name="time">0.0</double>
</lst>
<lst name="org.apache.solr.handler.component.MoreLikeThisComponent">
<double name="time">0.0</double>
</lst>
<lst name="org.apache.solr.handler.component.HighlightComponent">
<double name="time">0.0</double>
</lst>
<lst name="org.apache.solr.handler.component.StatsComponent">
<double name="time">0.0</double>
</lst>
<lst name="org.apache.solr.handler.component.SpellCheckComponent">
<double name="time">0.0</double>
</lst>
<lst name="org.apache.solr.handler.component.DebugComponent">
<double name="time">0.0</double>
</lst>
</lst>
<lst name="process">
<double name="time">2.0</double>
<lst name="org.apache.solr.handler.component.QueryComponent">
<double name="time">1.0</double>
</lst>
<lst name="org.apache.solr.handler.component.FacetComponent">
<double name="time">0.0</double>
</lst>
<lst name="org.apache.solr.handler.component.MoreLikeThisComponent">
<double name="time">0.0</double>
</lst>
<lst name="org.apache.solr.handler.component.HighlightComponent">
<double name="time">0.0</double>
</lst>
<lst name="org.apache.solr.handler.component.StatsComponent">
<double name="time">0.0</double>
</lst>
<lst name="org.apache.solr.handler.component.SpellCheckComponent">
<double name="time">0.0</double>
</lst>
<lst name="org.apache.solr.handler.component.DebugComponent">
<double name="time">1.0</double>
</lst>
</lst>
</lst>
</lst>
</response>
--
Alexander Ramos Jardim
Re: Understanding query explain information
Posted by Chris Hostetter <ho...@fucit.org>.
: Simply trying to understand why these strings generated such scores, and as
: far as I can understand, the only difference between them is the field
: norms, as all the other results maintain themselves.
...
: Well, if this is true, the field norm for my first document should be 0.5
: (1/sqrt(4)) as "Livro - IPAD - O Guia do Profissional" ends up with the
: terms "livro|ipad|guia|profissional" as tokens.
...
: 3.6808658 = (MATCH) fieldWeight(itemName:ipad in 102507), product of:
: 1.0 = tf(termFreq(itemName:ipad)=1)
: 8.413407 = idf(docFreq=165, maxDocs=275239)
: 0.4375 = fieldNorm(field=itemName, doc=102507)
fieldNorms are encoded into a compact byte representation which looses
some precision...
http://lucene.apache.org/java/3_0_3/api/core/org/apache/lucene/search/Similarity.html#encodeNorm%28float%29
-Hoss
Re: Understanding query explain information
Posted by lee carroll <le...@googlemail.com>.
Is it possible that synonyms are being added (synonym expansion) or at
least changing
the field length. I've saw this before. Check what exactly what terms
have been added.
On 23 June 2011 22:50, Alexander Ramos Jardim
<al...@gmail.com> wrote:
> Yes, I am using synonims in index time.
>
> 2011/6/22 lee carroll <le...@googlemail.com>
>
>> Hi are you using synonyms ?
>>
>>
>>
>> On 22 June 2011 10:30, Alexander Ramos Jardim
>> <al...@gmail.com> wrote:
>> > Hi guys,
>> >
>> > I am getting some doubts about how to correctly understand the debugQuery
>> > output. I have a field named itemName in my index. This is a text field,
>> > just that. When I quqery a simple ?q=itemName:iPad , I end up with the
>> > following query result.
>> >
>> > Simply trying to understand why these strings generated such scores, and
>> as
>> > far as I can understand, the only difference between them is the field
>> > norms, as all the other results maintain themselves.
>> >
>> > Now, how do I get these field norm values? Field Norm is the result of
>> this
>> > formula right?
>> >
>> > *1/square root of (terms)*,* where terms is the number of terms in my
>> field
>> >> after it is indexed*
>> >>
>> >
>> > Well, if this is true, the field norm for my first document should be 0.5
>> > (1/sqrt(4)) as "Livro - IPAD - O Guia do Profissional" ends up with the
>> > terms "livro|ipad|guia|profissional" as tokens.
>> >
>> > What I am forgetting to take into account?
>> >
>> > <?xml version="1.0" encoding="UTF-8"?>
>> > <response>
>> >
>> > <lst name="responseHeader">
>> > <int name="status">0</int>
>> > <int name="QTime">3</int>
>> > <lst name="params">
>> > <str name="debugQuery">on</str>
>> > <str name="start">0</str>
>> >
>> > <str name="rows">10</str>
>> > <arr name="indent">
>> > <str>on</str>
>> > <str>on</str>
>> > </arr>
>> > <str name="fl">itemName,score</str>
>> > <str name="version">2.2</str>
>> >
>> > <str name="q">itemName:ipad</str>
>> > </lst>
>> > </lst>
>> > <result name="response" numFound="161" start="0" maxScore="3.6808658">
>> > <doc>
>> > <float name="score">3.6808658</float>
>> > <str name="itemName">Livro - IPAD - O Guia do Profissional</str>
>> > </doc>
>> >
>> > <doc>
>> > <float name="score">3.1550279</float>
>> > <str name="itemName">Leitor de Cartão para Ipad - Mobimax</str>
>> > </doc>
>> > <doc>
>> > <float name="score">3.1550279</float>
>> > <str name="itemName">Sleeve para iPad</str>
>> >
>> > </doc>
>> > <doc>
>> > <float name="score">3.1550279</float>
>> > <str name="itemName">Sleeve de Neoprene para iPad</str>
>> > </doc>
>> > <doc>
>> > <float name="score">3.1550279</float>
>> >
>> > <str name="itemName">Carregador de parede para iPad</str>
>> > </doc>
>> > <doc>
>> > <float name="score">2.6291897</float>
>> > <str name="itemName">Case Envelope para iPad - Black - Built NY</str>
>> > </doc>
>> > <doc>
>> >
>> > <float name="score">2.6291897</float>
>> > <str name="itemName">Case Protetora p/ IPad de Silicone Duo - Browm
>> > - Iskin</str>
>> > </doc>
>> > <doc>
>> > <float name="score">2.6291897</float>
>> > <str name="itemName">Case Protetora p/ IPad de Silicone Duo - Clear
>> > - Iskin</str>
>> > </doc>
>> >
>> > <doc>
>> > <float name="score">2.6291897</float>
>> > <str name="itemName">Case p/ iPad Sleeve - Black - Built NY</str>
>> > </doc>
>> > <doc>
>> > <float name="score">2.6291897</float>
>> > <str name="itemName">Bolsa de Proteção p/ iPad Preta - Geonav</str>
>> >
>> > </doc>
>> > </result>
>> > <lst name="debug">
>> > <str name="rawquerystring">itemName:ipad</str>
>> > <str name="querystring">itemName:ipad</str>
>> > <str name="parsedquery">itemName:ipad</str>
>> > <str name="parsedquery_toString">itemName:ipad</str>
>> > <lst name="explain">
>> >
>> > <str name="7369507">
>> > 3.6808658 = (MATCH) fieldWeight(itemName:ipad in 102507), product of:
>> > 1.0 = tf(termFreq(itemName:ipad)=1)
>> > 8.413407 = idf(docFreq=165, maxDocs=275239)
>> > 0.4375 = fieldNorm(field=itemName, doc=102507)
>> > </str>
>> > <str name="7391111">
>> > 3.1550279 = (MATCH) fieldWeight(itemName:ipad in 226401), product of:
>> > 1.0 = tf(termFreq(itemName:ipad)=1)
>> > 8.413407 = idf(docFreq=165, maxDocs=275239)
>> > 0.375 = fieldNorm(field=itemName, doc=226401)
>> > </str>
>> > <str name="7356941">
>> > 3.1550279 = (MATCH) fieldWeight(itemName:ipad in 226409), product of:
>> > 1.0 = tf(termFreq(itemName:ipad)=1)
>> > 8.413407 = idf(docFreq=165, maxDocs=275239)
>> > 0.375 = fieldNorm(field=itemName, doc=226409)
>> > </str>
>> > <str name="7356931">
>> > 3.1550279 = (MATCH) fieldWeight(itemName:ipad in 226447), product of:
>> > 1.0 = tf(termFreq(itemName:ipad)=1)
>> > 8.413407 = idf(docFreq=165, maxDocs=275239)
>> > 0.375 = fieldNorm(field=itemName, doc=226447)
>> > </str>
>> > <str name="7360321">
>> >
>> > 3.1550279 = (MATCH) fieldWeight(itemName:ipad in 226583), product of:
>> > 1.0 = tf(termFreq(itemName:ipad)=1)
>> > 8.413407 = idf(docFreq=165, maxDocs=275239)
>> > 0.375 = fieldNorm(field=itemName, doc=226583)
>> > </str>
>> > <str name="7428354">
>> > 2.6291897 = (MATCH) fieldWeight(itemName:ipad in 223178), product of:
>> > 1.0 = tf(termFreq(itemName:ipad)=1)
>> > 8.413407 = idf(docFreq=165, maxDocs=275239)
>> > 0.3125 = fieldNorm(field=itemName, doc=223178)
>> > </str>
>> > <str name="7366074">
>> > 2.6291897 = (MATCH) fieldWeight(itemName:ipad in 223196), product of:
>> > 1.0 = tf(termFreq(itemName:ipad)=1)
>> > 8.413407 = idf(docFreq=165, maxDocs=275239)
>> > 0.3125 = fieldNorm(field=itemName, doc=223196)
>> > </str>
>> > <str name="7366068">
>> > 2.6291897 = (MATCH) fieldWeight(itemName:ipad in 223831), product of:
>> > 1.0 = tf(termFreq(itemName:ipad)=1)
>> > 8.413407 = idf(docFreq=165, maxDocs=275239)
>> > 0.3125 = fieldNorm(field=itemName, doc=223831)
>> > </str>
>> > <str name="7428358">
>> > 2.6291897 = (MATCH) fieldWeight(itemName:ipad in 223856), product of:
>> > 1.0 = tf(termFreq(itemName:ipad)=1)
>> > 8.413407 = idf(docFreq=165, maxDocs=275239)
>> > 0.3125 = fieldNorm(field=itemName, doc=223856)
>> >
>> > </str>
>> > <str name="7422680">
>> > 2.6291897 = (MATCH) fieldWeight(itemName:ipad in 223908), product of:
>> > 1.0 = tf(termFreq(itemName:ipad)=1)
>> > 8.413407 = idf(docFreq=165, maxDocs=275239)
>> > 0.3125 = fieldNorm(field=itemName, doc=223908)
>> > </str>
>> > </lst>
>> > <str name="QParser">LuceneQParser</str>
>> > <lst name="timing">
>> > <double name="time">3.0</double>
>> > <lst name="prepare">
>> >
>> > <double name="time">1.0</double>
>> > <lst name="org.apache.solr.handler.component.QueryComponent">
>> > <double name="time">1.0</double>
>> > </lst>
>> > <lst name="org.apache.solr.handler.component.FacetComponent">
>> > <double name="time">0.0</double>
>> > </lst>
>> >
>> > <lst
>> name="org.apache.solr.handler.component.MoreLikeThisComponent">
>> > <double name="time">0.0</double>
>> > </lst>
>> > <lst name="org.apache.solr.handler.component.HighlightComponent">
>> > <double name="time">0.0</double>
>> > </lst>
>> > <lst name="org.apache.solr.handler.component.StatsComponent">
>> > <double name="time">0.0</double>
>> >
>> > </lst>
>> > <lst name="org.apache.solr.handler.component.SpellCheckComponent">
>> > <double name="time">0.0</double>
>> > </lst>
>> > <lst name="org.apache.solr.handler.component.DebugComponent">
>> > <double name="time">0.0</double>
>> > </lst>
>> > </lst>
>> >
>> > <lst name="process">
>> > <double name="time">2.0</double>
>> > <lst name="org.apache.solr.handler.component.QueryComponent">
>> > <double name="time">1.0</double>
>> > </lst>
>> > <lst name="org.apache.solr.handler.component.FacetComponent">
>> > <double name="time">0.0</double>
>> >
>> > </lst>
>> > <lst
>> name="org.apache.solr.handler.component.MoreLikeThisComponent">
>> > <double name="time">0.0</double>
>> > </lst>
>> > <lst name="org.apache.solr.handler.component.HighlightComponent">
>> > <double name="time">0.0</double>
>> > </lst>
>> > <lst name="org.apache.solr.handler.component.StatsComponent">
>> >
>> > <double name="time">0.0</double>
>> > </lst>
>> > <lst name="org.apache.solr.handler.component.SpellCheckComponent">
>> > <double name="time">0.0</double>
>> > </lst>
>> > <lst name="org.apache.solr.handler.component.DebugComponent">
>> > <double name="time">1.0</double>
>> >
>> > </lst>
>> > </lst>
>> > </lst>
>> > </lst>
>> > </response>
>> >
>> >
>> >
>> > --
>> > Alexander Ramos Jardim
>> >
>>
>
>
>
> --
> Alexander Ramos Jardim
>
Re: Understanding query explain information
Posted by Alexander Ramos Jardim <al...@gmail.com>.
Yes, I am using synonims in index time.
2011/6/22 lee carroll <le...@googlemail.com>
> Hi are you using synonyms ?
>
>
>
> On 22 June 2011 10:30, Alexander Ramos Jardim
> <al...@gmail.com> wrote:
> > Hi guys,
> >
> > I am getting some doubts about how to correctly understand the debugQuery
> > output. I have a field named itemName in my index. This is a text field,
> > just that. When I quqery a simple ?q=itemName:iPad , I end up with the
> > following query result.
> >
> > Simply trying to understand why these strings generated such scores, and
> as
> > far as I can understand, the only difference between them is the field
> > norms, as all the other results maintain themselves.
> >
> > Now, how do I get these field norm values? Field Norm is the result of
> this
> > formula right?
> >
> > *1/square root of (terms)*,* where terms is the number of terms in my
> field
> >> after it is indexed*
> >>
> >
> > Well, if this is true, the field norm for my first document should be 0.5
> > (1/sqrt(4)) as "Livro - IPAD - O Guia do Profissional" ends up with the
> > terms "livro|ipad|guia|profissional" as tokens.
> >
> > What I am forgetting to take into account?
> >
> > <?xml version="1.0" encoding="UTF-8"?>
> > <response>
> >
> > <lst name="responseHeader">
> > <int name="status">0</int>
> > <int name="QTime">3</int>
> > <lst name="params">
> > <str name="debugQuery">on</str>
> > <str name="start">0</str>
> >
> > <str name="rows">10</str>
> > <arr name="indent">
> > <str>on</str>
> > <str>on</str>
> > </arr>
> > <str name="fl">itemName,score</str>
> > <str name="version">2.2</str>
> >
> > <str name="q">itemName:ipad</str>
> > </lst>
> > </lst>
> > <result name="response" numFound="161" start="0" maxScore="3.6808658">
> > <doc>
> > <float name="score">3.6808658</float>
> > <str name="itemName">Livro - IPAD - O Guia do Profissional</str>
> > </doc>
> >
> > <doc>
> > <float name="score">3.1550279</float>
> > <str name="itemName">Leitor de Cartão para Ipad - Mobimax</str>
> > </doc>
> > <doc>
> > <float name="score">3.1550279</float>
> > <str name="itemName">Sleeve para iPad</str>
> >
> > </doc>
> > <doc>
> > <float name="score">3.1550279</float>
> > <str name="itemName">Sleeve de Neoprene para iPad</str>
> > </doc>
> > <doc>
> > <float name="score">3.1550279</float>
> >
> > <str name="itemName">Carregador de parede para iPad</str>
> > </doc>
> > <doc>
> > <float name="score">2.6291897</float>
> > <str name="itemName">Case Envelope para iPad - Black - Built NY</str>
> > </doc>
> > <doc>
> >
> > <float name="score">2.6291897</float>
> > <str name="itemName">Case Protetora p/ IPad de Silicone Duo - Browm
> > - Iskin</str>
> > </doc>
> > <doc>
> > <float name="score">2.6291897</float>
> > <str name="itemName">Case Protetora p/ IPad de Silicone Duo - Clear
> > - Iskin</str>
> > </doc>
> >
> > <doc>
> > <float name="score">2.6291897</float>
> > <str name="itemName">Case p/ iPad Sleeve - Black - Built NY</str>
> > </doc>
> > <doc>
> > <float name="score">2.6291897</float>
> > <str name="itemName">Bolsa de Proteção p/ iPad Preta - Geonav</str>
> >
> > </doc>
> > </result>
> > <lst name="debug">
> > <str name="rawquerystring">itemName:ipad</str>
> > <str name="querystring">itemName:ipad</str>
> > <str name="parsedquery">itemName:ipad</str>
> > <str name="parsedquery_toString">itemName:ipad</str>
> > <lst name="explain">
> >
> > <str name="7369507">
> > 3.6808658 = (MATCH) fieldWeight(itemName:ipad in 102507), product of:
> > 1.0 = tf(termFreq(itemName:ipad)=1)
> > 8.413407 = idf(docFreq=165, maxDocs=275239)
> > 0.4375 = fieldNorm(field=itemName, doc=102507)
> > </str>
> > <str name="7391111">
> > 3.1550279 = (MATCH) fieldWeight(itemName:ipad in 226401), product of:
> > 1.0 = tf(termFreq(itemName:ipad)=1)
> > 8.413407 = idf(docFreq=165, maxDocs=275239)
> > 0.375 = fieldNorm(field=itemName, doc=226401)
> > </str>
> > <str name="7356941">
> > 3.1550279 = (MATCH) fieldWeight(itemName:ipad in 226409), product of:
> > 1.0 = tf(termFreq(itemName:ipad)=1)
> > 8.413407 = idf(docFreq=165, maxDocs=275239)
> > 0.375 = fieldNorm(field=itemName, doc=226409)
> > </str>
> > <str name="7356931">
> > 3.1550279 = (MATCH) fieldWeight(itemName:ipad in 226447), product of:
> > 1.0 = tf(termFreq(itemName:ipad)=1)
> > 8.413407 = idf(docFreq=165, maxDocs=275239)
> > 0.375 = fieldNorm(field=itemName, doc=226447)
> > </str>
> > <str name="7360321">
> >
> > 3.1550279 = (MATCH) fieldWeight(itemName:ipad in 226583), product of:
> > 1.0 = tf(termFreq(itemName:ipad)=1)
> > 8.413407 = idf(docFreq=165, maxDocs=275239)
> > 0.375 = fieldNorm(field=itemName, doc=226583)
> > </str>
> > <str name="7428354">
> > 2.6291897 = (MATCH) fieldWeight(itemName:ipad in 223178), product of:
> > 1.0 = tf(termFreq(itemName:ipad)=1)
> > 8.413407 = idf(docFreq=165, maxDocs=275239)
> > 0.3125 = fieldNorm(field=itemName, doc=223178)
> > </str>
> > <str name="7366074">
> > 2.6291897 = (MATCH) fieldWeight(itemName:ipad in 223196), product of:
> > 1.0 = tf(termFreq(itemName:ipad)=1)
> > 8.413407 = idf(docFreq=165, maxDocs=275239)
> > 0.3125 = fieldNorm(field=itemName, doc=223196)
> > </str>
> > <str name="7366068">
> > 2.6291897 = (MATCH) fieldWeight(itemName:ipad in 223831), product of:
> > 1.0 = tf(termFreq(itemName:ipad)=1)
> > 8.413407 = idf(docFreq=165, maxDocs=275239)
> > 0.3125 = fieldNorm(field=itemName, doc=223831)
> > </str>
> > <str name="7428358">
> > 2.6291897 = (MATCH) fieldWeight(itemName:ipad in 223856), product of:
> > 1.0 = tf(termFreq(itemName:ipad)=1)
> > 8.413407 = idf(docFreq=165, maxDocs=275239)
> > 0.3125 = fieldNorm(field=itemName, doc=223856)
> >
> > </str>
> > <str name="7422680">
> > 2.6291897 = (MATCH) fieldWeight(itemName:ipad in 223908), product of:
> > 1.0 = tf(termFreq(itemName:ipad)=1)
> > 8.413407 = idf(docFreq=165, maxDocs=275239)
> > 0.3125 = fieldNorm(field=itemName, doc=223908)
> > </str>
> > </lst>
> > <str name="QParser">LuceneQParser</str>
> > <lst name="timing">
> > <double name="time">3.0</double>
> > <lst name="prepare">
> >
> > <double name="time">1.0</double>
> > <lst name="org.apache.solr.handler.component.QueryComponent">
> > <double name="time">1.0</double>
> > </lst>
> > <lst name="org.apache.solr.handler.component.FacetComponent">
> > <double name="time">0.0</double>
> > </lst>
> >
> > <lst
> name="org.apache.solr.handler.component.MoreLikeThisComponent">
> > <double name="time">0.0</double>
> > </lst>
> > <lst name="org.apache.solr.handler.component.HighlightComponent">
> > <double name="time">0.0</double>
> > </lst>
> > <lst name="org.apache.solr.handler.component.StatsComponent">
> > <double name="time">0.0</double>
> >
> > </lst>
> > <lst name="org.apache.solr.handler.component.SpellCheckComponent">
> > <double name="time">0.0</double>
> > </lst>
> > <lst name="org.apache.solr.handler.component.DebugComponent">
> > <double name="time">0.0</double>
> > </lst>
> > </lst>
> >
> > <lst name="process">
> > <double name="time">2.0</double>
> > <lst name="org.apache.solr.handler.component.QueryComponent">
> > <double name="time">1.0</double>
> > </lst>
> > <lst name="org.apache.solr.handler.component.FacetComponent">
> > <double name="time">0.0</double>
> >
> > </lst>
> > <lst
> name="org.apache.solr.handler.component.MoreLikeThisComponent">
> > <double name="time">0.0</double>
> > </lst>
> > <lst name="org.apache.solr.handler.component.HighlightComponent">
> > <double name="time">0.0</double>
> > </lst>
> > <lst name="org.apache.solr.handler.component.StatsComponent">
> >
> > <double name="time">0.0</double>
> > </lst>
> > <lst name="org.apache.solr.handler.component.SpellCheckComponent">
> > <double name="time">0.0</double>
> > </lst>
> > <lst name="org.apache.solr.handler.component.DebugComponent">
> > <double name="time">1.0</double>
> >
> > </lst>
> > </lst>
> > </lst>
> > </lst>
> > </response>
> >
> >
> >
> > --
> > Alexander Ramos Jardim
> >
>
--
Alexander Ramos Jardim
Re: Understanding query explain information
Posted by lee carroll <le...@googlemail.com>.
Hi are you using synonyms ?
On 22 June 2011 10:30, Alexander Ramos Jardim
<al...@gmail.com> wrote:
> Hi guys,
>
> I am getting some doubts about how to correctly understand the debugQuery
> output. I have a field named itemName in my index. This is a text field,
> just that. When I quqery a simple ?q=itemName:iPad , I end up with the
> following query result.
>
> Simply trying to understand why these strings generated such scores, and as
> far as I can understand, the only difference between them is the field
> norms, as all the other results maintain themselves.
>
> Now, how do I get these field norm values? Field Norm is the result of this
> formula right?
>
> *1/square root of (terms)*,* where terms is the number of terms in my field
>> after it is indexed*
>>
>
> Well, if this is true, the field norm for my first document should be 0.5
> (1/sqrt(4)) as "Livro - IPAD - O Guia do Profissional" ends up with the
> terms "livro|ipad|guia|profissional" as tokens.
>
> What I am forgetting to take into account?
>
> <?xml version="1.0" encoding="UTF-8"?>
> <response>
>
> <lst name="responseHeader">
> <int name="status">0</int>
> <int name="QTime">3</int>
> <lst name="params">
> <str name="debugQuery">on</str>
> <str name="start">0</str>
>
> <str name="rows">10</str>
> <arr name="indent">
> <str>on</str>
> <str>on</str>
> </arr>
> <str name="fl">itemName,score</str>
> <str name="version">2.2</str>
>
> <str name="q">itemName:ipad</str>
> </lst>
> </lst>
> <result name="response" numFound="161" start="0" maxScore="3.6808658">
> <doc>
> <float name="score">3.6808658</float>
> <str name="itemName">Livro - IPAD - O Guia do Profissional</str>
> </doc>
>
> <doc>
> <float name="score">3.1550279</float>
> <str name="itemName">Leitor de Cartão para Ipad - Mobimax</str>
> </doc>
> <doc>
> <float name="score">3.1550279</float>
> <str name="itemName">Sleeve para iPad</str>
>
> </doc>
> <doc>
> <float name="score">3.1550279</float>
> <str name="itemName">Sleeve de Neoprene para iPad</str>
> </doc>
> <doc>
> <float name="score">3.1550279</float>
>
> <str name="itemName">Carregador de parede para iPad</str>
> </doc>
> <doc>
> <float name="score">2.6291897</float>
> <str name="itemName">Case Envelope para iPad - Black - Built NY</str>
> </doc>
> <doc>
>
> <float name="score">2.6291897</float>
> <str name="itemName">Case Protetora p/ IPad de Silicone Duo - Browm
> - Iskin</str>
> </doc>
> <doc>
> <float name="score">2.6291897</float>
> <str name="itemName">Case Protetora p/ IPad de Silicone Duo - Clear
> - Iskin</str>
> </doc>
>
> <doc>
> <float name="score">2.6291897</float>
> <str name="itemName">Case p/ iPad Sleeve - Black - Built NY</str>
> </doc>
> <doc>
> <float name="score">2.6291897</float>
> <str name="itemName">Bolsa de Proteção p/ iPad Preta - Geonav</str>
>
> </doc>
> </result>
> <lst name="debug">
> <str name="rawquerystring">itemName:ipad</str>
> <str name="querystring">itemName:ipad</str>
> <str name="parsedquery">itemName:ipad</str>
> <str name="parsedquery_toString">itemName:ipad</str>
> <lst name="explain">
>
> <str name="7369507">
> 3.6808658 = (MATCH) fieldWeight(itemName:ipad in 102507), product of:
> 1.0 = tf(termFreq(itemName:ipad)=1)
> 8.413407 = idf(docFreq=165, maxDocs=275239)
> 0.4375 = fieldNorm(field=itemName, doc=102507)
> </str>
> <str name="7391111">
> 3.1550279 = (MATCH) fieldWeight(itemName:ipad in 226401), product of:
> 1.0 = tf(termFreq(itemName:ipad)=1)
> 8.413407 = idf(docFreq=165, maxDocs=275239)
> 0.375 = fieldNorm(field=itemName, doc=226401)
> </str>
> <str name="7356941">
> 3.1550279 = (MATCH) fieldWeight(itemName:ipad in 226409), product of:
> 1.0 = tf(termFreq(itemName:ipad)=1)
> 8.413407 = idf(docFreq=165, maxDocs=275239)
> 0.375 = fieldNorm(field=itemName, doc=226409)
> </str>
> <str name="7356931">
> 3.1550279 = (MATCH) fieldWeight(itemName:ipad in 226447), product of:
> 1.0 = tf(termFreq(itemName:ipad)=1)
> 8.413407 = idf(docFreq=165, maxDocs=275239)
> 0.375 = fieldNorm(field=itemName, doc=226447)
> </str>
> <str name="7360321">
>
> 3.1550279 = (MATCH) fieldWeight(itemName:ipad in 226583), product of:
> 1.0 = tf(termFreq(itemName:ipad)=1)
> 8.413407 = idf(docFreq=165, maxDocs=275239)
> 0.375 = fieldNorm(field=itemName, doc=226583)
> </str>
> <str name="7428354">
> 2.6291897 = (MATCH) fieldWeight(itemName:ipad in 223178), product of:
> 1.0 = tf(termFreq(itemName:ipad)=1)
> 8.413407 = idf(docFreq=165, maxDocs=275239)
> 0.3125 = fieldNorm(field=itemName, doc=223178)
> </str>
> <str name="7366074">
> 2.6291897 = (MATCH) fieldWeight(itemName:ipad in 223196), product of:
> 1.0 = tf(termFreq(itemName:ipad)=1)
> 8.413407 = idf(docFreq=165, maxDocs=275239)
> 0.3125 = fieldNorm(field=itemName, doc=223196)
> </str>
> <str name="7366068">
> 2.6291897 = (MATCH) fieldWeight(itemName:ipad in 223831), product of:
> 1.0 = tf(termFreq(itemName:ipad)=1)
> 8.413407 = idf(docFreq=165, maxDocs=275239)
> 0.3125 = fieldNorm(field=itemName, doc=223831)
> </str>
> <str name="7428358">
> 2.6291897 = (MATCH) fieldWeight(itemName:ipad in 223856), product of:
> 1.0 = tf(termFreq(itemName:ipad)=1)
> 8.413407 = idf(docFreq=165, maxDocs=275239)
> 0.3125 = fieldNorm(field=itemName, doc=223856)
>
> </str>
> <str name="7422680">
> 2.6291897 = (MATCH) fieldWeight(itemName:ipad in 223908), product of:
> 1.0 = tf(termFreq(itemName:ipad)=1)
> 8.413407 = idf(docFreq=165, maxDocs=275239)
> 0.3125 = fieldNorm(field=itemName, doc=223908)
> </str>
> </lst>
> <str name="QParser">LuceneQParser</str>
> <lst name="timing">
> <double name="time">3.0</double>
> <lst name="prepare">
>
> <double name="time">1.0</double>
> <lst name="org.apache.solr.handler.component.QueryComponent">
> <double name="time">1.0</double>
> </lst>
> <lst name="org.apache.solr.handler.component.FacetComponent">
> <double name="time">0.0</double>
> </lst>
>
> <lst name="org.apache.solr.handler.component.MoreLikeThisComponent">
> <double name="time">0.0</double>
> </lst>
> <lst name="org.apache.solr.handler.component.HighlightComponent">
> <double name="time">0.0</double>
> </lst>
> <lst name="org.apache.solr.handler.component.StatsComponent">
> <double name="time">0.0</double>
>
> </lst>
> <lst name="org.apache.solr.handler.component.SpellCheckComponent">
> <double name="time">0.0</double>
> </lst>
> <lst name="org.apache.solr.handler.component.DebugComponent">
> <double name="time">0.0</double>
> </lst>
> </lst>
>
> <lst name="process">
> <double name="time">2.0</double>
> <lst name="org.apache.solr.handler.component.QueryComponent">
> <double name="time">1.0</double>
> </lst>
> <lst name="org.apache.solr.handler.component.FacetComponent">
> <double name="time">0.0</double>
>
> </lst>
> <lst name="org.apache.solr.handler.component.MoreLikeThisComponent">
> <double name="time">0.0</double>
> </lst>
> <lst name="org.apache.solr.handler.component.HighlightComponent">
> <double name="time">0.0</double>
> </lst>
> <lst name="org.apache.solr.handler.component.StatsComponent">
>
> <double name="time">0.0</double>
> </lst>
> <lst name="org.apache.solr.handler.component.SpellCheckComponent">
> <double name="time">0.0</double>
> </lst>
> <lst name="org.apache.solr.handler.component.DebugComponent">
> <double name="time">1.0</double>
>
> </lst>
> </lst>
> </lst>
> </lst>
> </response>
>
>
>
> --
> Alexander Ramos Jardim
>