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From Erick Erickson <erickerick...@gmail.com>
Subject Re: Autocomplete using facet labels?
Date Wed, 12 Apr 2017 16:13:05 GMT
Bah, I continually forget that I'm on the Lucene list, sorry for the confusion.

On Wed, Apr 12, 2017 at 8:10 AM, Rob Audenaerde
<rob.audenaerde@gmail.com> wrote:
> Thanks Erick for you reply,
>
> I see you refer to solr sources while I was hoping for lucene suggestions.
>
> I hadn't thought  of the idea of reverse indexing the facet values and will
> consider it.
>
> Meanwhile I will try to explore how I might to use the TaxonomyIndex as
> well, as this should contain the FacetLabels I'd like to use.
>
> -Rob
>
> On Wed, Apr 12, 2017 at 5:00 PM, Erick Erickson <erickerickson@gmail.com>
> wrote:
>
>> First take a look at autosuggest. That does some great stuff if you
>> can build the autocomplete dictionary only periodically, which can be
>> somewhat expensive. See:
>> https://lucidworks.com/2015/03/04/solr-suggester/
>>
>> There are lighter-weight ways to autosuggest that should be extremely
>> fast, in particular index your stuff backwards in a suggest field as:
>> John Doe - Author
>>
>> and use TermsComponent on that for instance. TermsComponent is pretty
>> literal, i.e. it's case-sensitive but you can send terms.prefix=jo and
>> case things properly on the app side.
>>
>> Best,
>> Erick
>>
>> On Wed, Apr 12, 2017 at 6:33 AM, Rob Audenaerde
>> <rob.audenaerde@gmail.com> wrote:
>> > I have a Lucene (6.4.2) index with about 2-5M documents, and each
>> document
>> > has about 10 facets (for example 'author', 'publisher', etc). The facets
>> > might have up to 100.000 different values.
>> >
>> > I have a search bar on top of my application, and would like to implement
>> > autocomplete using the facets. For example, when the user enters 'Jo' I
>> > would like the options to be:
>> >
>> > 'John Doe - Author'
>> > 'Jonatan Driver - Publisher'
>> > 'Joan Deville - Author'
>> > ...
>> >
>> > My facets are structured using the FacetFields and Lucene Taxonomy, like
>> > this:
>> >
>> > 'Author / John Doe'
>> > 'Author / Joan Deville'
>> > ...
>> >
>> > Are there built-in options to create such an autocomplete? Or do I have
>> to
>> > build it myself?
>> >
>> > I prefer not to do a search on all the matching documents and collect
>> > facets for those, because that is not very fast
>> >
>> > Any hints?
>> >
>> > Thanks in advance,
>> > Rob Audenaerde
>> >
>> > See also:
>> > http://stackoverflow.com/questions/43369715/lucene-
>> autocomplete-using-facet-labels
>>
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