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From Jeff Wartes <>
Subject Re: Facets based on sampling
Date Fri, 04 Nov 2016 23:36:39 GMT had some pretty interesting looking work on
heuristic counts for facets, among other things.

Unfortunately, it didn’t get picked up, but if you don’t mind using Solr 4.10, there’s
a jar.

On 11/4/16, 12:02 PM, "John Davis" <> wrote:

    I am trying to improve the performance of queries with facets. I understand
    that for queries with high facet cardinality and large number results the
    current facet computation algorithms can be slow as they are trying to loop
    across all docs and facet values.
    Does there exist an option to compute facets by just looking at the top-n
    results instead of all of them or a sample of results based on some query
    parameters? I couldn't find one and if it does not exist, has this come up
    before? This would definitely not be a precise facet count but using
    reasonable sampling algorithms we should be able to extrapolate well.
    Thank you in advance for any advice!

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