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https://issues.apache.org/jira/browse/LUCENE-8340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16602831#comment-16602831
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Adrien Grand commented on LUCENE-8340:
--------------------------------------

Good call, the way that the leadCost was leveraged was not very efficient. I 
changed the logic to enforce that we only materialize the set of matches if 
there are less than leadCost/8 matches, which resolved the main slowdowns I was 
seeing.

> Efficient boosting by recency
> -----------------------------
>
>                 Key: LUCENE-8340
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8340
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Adrien Grand
>            Priority: Minor
>         Attachments: LUCENE-8340.patch
>
>
> I would like that we support something like 
> \{{FeatureField.newSaturationQuery}} but that works with features that are 
> computed dynamically like recency or geo-distance, and is still optimized for 
> top-hits collection. I'm starting with recency because it makes things a bit 
> easier even though I suspect that geo-distance might be a more common need.



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