Re: Synonyms + autoGeneratePhraseQueries

[Andrea Gazzarini]

Hi Michael,
the synonym is expanded at query time so the resulting query is the same 
regardless if q=oow or q=out of warranty:


1) autogeneratePhraseQueries=*true*, sow=false, df=title

q=out of warranty => (title:oow PhraseQuery(title:"out of warranty"))
q=oow   =>(PhraseQuery(title:"out of warranty") title:oow)

2) autogeneratePhraseQueries=*false (or missing)*, sow=false, df=title

q=out of warranty => ((+title:out +title:of +title:warranty) title:oow)
q=oow   =>(title:oow (+title:out +title:of +title:warranty))

As you can see clauses are inverted but the resulting queries are 
equivalent.


Sorry I forgot a couple of info:

 * I tried with Solr 7.1.0 and 7.4.0
 * I'm using the following request handler, but things are no different
   if I switch to edismax


   
   false
   title
   lucene
   true
   
   



On 27/07/18 04:32, Michael Sokolov wrote:
Did you mean q=oow in your example? As written, I don't see how there 
is a problem.


On Thu, Jul 26, 2018 at 8:41 AM Andrea Gazzarini > wrote:


Hi, still fighting with synonyms, I have another question.

I'm not understanding the role, and the effect, of the
"autoGeneratePhraseQueries" attribute in a synonym context.
I mean, if I have the following field type:













with the following synonym: *out of warranty,oow*

with the following query: *q=out of warranty*

The output query is exactly what I would expect: *(title:oow
PhraseQuery(title:"out of warranty"))*

Setting the autoGeneratePhraseQueries to *false* (or better,
forgetting the attribute declaration at all), the output query is:

*(title:oow (+title:out +title:of +title:warranty))*

Which matches things like "I had to step out for renewing the
warranty of my device".

This, at first glance sounds to me completely wrong. Or, better,
I'm not able to imagine a use case where that synonym
decomposition could be useful. Is that wanted? I would say that
the query parser should always generates a phrase query for
multi-term synonyms, like in the first example (i.e.
autoGeneratePhraseQueries=true).

Thanks in advance,
Andrea

Re: Synonyms + autoGeneratePhraseQueries

[Michael Sokolov]

Did you mean q=oow in your example? As written, I don't see how there is a
problem.

On Thu, Jul 26, 2018 at 8:41 AM Andrea Gazzarini 
wrote:

> Hi, still fighting with synonyms, I have another question.
> I'm not understanding the role, and the effect, of the
> "autoGeneratePhraseQueries" attribute in a synonym context.
> I mean, if I have the following field type:
>
>  autoGeneratePhraseQueries="true">
>
>
>
>
>
>
>
> synonyms="synonyms.txt" ignoreCase="false" expand="true"/>
>
>
> with the following synonym: *out of warranty,oow*
>
> with the following query: *q=out of warranty*
>
> The output query is exactly what I would expect: *(title:oow
> PhraseQuery(title:"out of warranty"))*
>
> Setting the autoGeneratePhraseQueries to *false* (or better, forgetting
> the attribute declaration at all), the output query is:
>
> *(title:oow (+title:out +title:of +title:warranty))*
> Which matches things like "I had to step out for renewing the warranty of
> my device".
>
> This, at first glance sounds to me completely wrong. Or, better, I'm not
> able to imagine a use case where that synonym decomposition could be
> useful. Is that wanted? I would say that the query parser should always
> generates a phrase query for multi-term synonyms, like in the first example
> (i.e. autoGeneratePhraseQueries=true).
>
> Thanks in advance,
> Andrea
>

Synonyms + autoGeneratePhraseQueries

[Andrea Gazzarini]

Hi, still fighting with synonyms, I have another question.

I'm not understanding the role, and the effect, of the 
"autoGeneratePhraseQueries" attribute in a synonym context.

I mean, if I have the following field type:

autoGeneratePhraseQueries="true">

   
   
   
   
   
   
   
   ignoreCase="false" expand="true"/>

   


with the following synonym: *out of warranty,oow*

with the following query: *q=out of warranty*

The output query is exactly what I would expect: *(title:oow 
PhraseQuery(title:"out of warranty"))*


Setting the autoGeneratePhraseQueries to *false* (or better, forgetting 
the attribute declaration at all), the output query is:


*(title:oow (+title:out +title:of +title:warranty))*

Which matches things like "I had to step out for renewing the warranty 
of my device".


This, at first glance sounds to me completely wrong. Or, better, I'm not 
able to imagine a use case where that synonym decomposition could be 
useful. Is that wanted? I would say that the query parser should always 
generates a phrase query for multi-term synonyms, like in the first 
example (i.e. autoGeneratePhraseQueries=true).


Thanks in advance,
Andrea