Re: Using n-grams vs AnalyzingInfixLookupFactory for suggestions in solr

[Alessandro Benedetti <ab...@apache.org>]

Hi Harsha,
my blog can help :

http://alexbenedetti.blogspot.co.uk/2015/07/solr-you-complete-me.html

Take a look to the related section.

Cheers

On Sun, Jun 26, 2016 at 5:27 PM, Erick Erickson <er...@gmail.com>
wrote:

> 1> The difference is that the factory returns the original field
> from a "sidecar" index. If you're content with just firing a standard
> query at your main index and returning the associated fields
> then you can do this from the main index. You won't be able
> to do the sophisticated stuff with weights though.
>
> 2> https://issues.apache.org/jira/browse/LUCENE-6336
>
> 3> You can have multiple suggesters in the same component.
>
> Best,
> Erick
>
> On Thu, Jun 23, 2016 at 10:21 PM, Harsha JSN <ha...@gmail.com> wrote:
> > Hi,
> >    I have some doubts regarding usage of AnalyzingInfixLookupFactory as
> >  lookup implementation for suggestions.
> >
> > 1.) AnalyzingInfixLookupFactory constructs n-grams for the suggestion
> field
> > while building suggestions index. If the main index which is used for
> > search is already having n-grams for this field, is it still preferred to
> > choose  AnalyzingInfixLookupFactory or can we directly build suggestions
> > from the main index?
> >
> > 2.) Also, AnalyzingInfixLookupFactory returns duplicate records if the
> > suggestion field has same value in multiple documents. Instead if i
> search
> > suggestions from main index (n-grams) i can eliminate the duplicates by
> > grouping the results. But grouping can be a complex operation.Can you
> guide
> > the correct approach here?
> >
> > 3.) Choosing FuzzyLookupFactory looks beneficial, but we have to filter
> the
> > results over user context and also we need to provide infix search
> > capabilities for suggestions which we can't.
> >
> > Can some one please help on this? Thanks in advance.
> >
> > Harsha.
>



-- 
--------------------------

Benedetti Alessandro
Visiting card : http://about.me/alessandro_benedetti

"Tyger, tyger burning bright
In the forests of the night,
What immortal hand or eye
Could frame thy fearful symmetry?"

William Blake - Songs of Experience -1794 England