How to get suggestions with numbers?

[Lasitha Wattaladeniya <wa...@gmail.com>]

Hi devs,

Past couple of days I was trying to get solr suggestions work with my
applications.  The requirement is as follows,

I have some codes eg :abcdef20000.  I should be able to type "2000" and get
suggestions as abcdef20000.

I index the field containing the code to a ngram field (standard
analysers,  nothing fancy).  But it does not show the required suggestion.
I think since I'm using spellchecker component with suggester,  when I
enter numbers the solr thinks I don't need suggestions.

Can anybody help me to solve this problem?

Regards,
Lasitha

Re: How to get suggestions with numbers?

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

Hi Lasitha,
do you need only to suggest terms ?
In that case I would *suggest* you to use the suggester component.

Specifically your use case is infix suggestion.
This can be easily achieved using an AnalyzingInfixSuggester :

<lst name="suggester">
  <str name="name">AnalyzingInfixSuggester</str>
  <str name="lookupImpl">AnalyzingInfixLookupFactory</str>
  <str name="dictionaryImpl">DocumentDictionaryFactory</str>
  <str name="field">title</str>
  <str name="weightField">price</str>
  <str name="suggestAnalyzerFieldType">text_en</str>
</lst>

In your case just use a proper analyser, which I guess will use the  word
delimiter token filter [1] .
It should do it ( in particular the splitOnNumerics feature) .

Feel free to read my blog for additional details [2]

Cheers


[1] Word Delimiter Token Filter
<https://cwiki.apache.org/confluence/display/solr/Filter+Descriptions#FilterDescriptions-WordDelimiterFilter>
[2] Ad Maiora - Solr Autocomplete
<http://alexbenedetti.blogspot.co.uk/2015/07/solr-you-complete-me.html>
[3] Lucidwork Erick blog
<https://lucidworks.com/blog/2015/03/04/solr-suggester/>

On Fri, Jul 29, 2016 at 9:55 AM, Lasitha Wattaladeniya <wa...@gmail.com>
wrote:

> Hi devs,
>
> Past couple of days I was trying to get solr suggestions work with my
> applications.  The requirement is as follows,
>
> I have some codes eg :abcdef20000.  I should be able to type "2000" and get
> suggestions as abcdef20000.
>
> I index the field containing the code to a ngram field (standard
> analysers,  nothing fancy).  But it does not show the required suggestion.
> I think since I'm using spellchecker component with suggester,  when I
> enter numbers the solr thinks I don't need suggestions.
>
> Can anybody help me to solve this problem?
>
> Regards,
> Lasitha
>



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