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Posted to issues@lucene.apache.org by "Mayya Sharipova (Jira)" <ji...@apache.org> on 2021/07/23 19:56:00 UTC

[jira] [Closed] (LUCENE-10034) Vectors NeighborQueue MIN/MAX heap reversed?

     [ https://issues.apache.org/jira/browse/LUCENE-10034?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mayya Sharipova closed LUCENE-10034.
------------------------------------

> Vectors NeighborQueue MIN/MAX heap reversed?
> --------------------------------------------
>
>                 Key: LUCENE-10034
>                 URL: https://issues.apache.org/jira/browse/LUCENE-10034
>             Project: Lucene - Core
>          Issue Type: Bug
>            Reporter: Mayya Sharipova
>            Priority: Trivial
>
> NeighborQueue is defined as following:
> {code:java}
> NeighborQueue(int initialSize, boolean reversed) {
>   if (reversed) {
>     heap = LongHeap.create(LongHeap.Order.MAX, initialSize);
>   } else {
>     heap = LongHeap.create(LongHeap.Order.MIN, initialSize);
>   }
> }
> {code}
> should it be reversed? should it be instead using MIN heap for reversed functions such as EUCLIDEAN  distance, as we are interested in neigbors with min euclidean distances? 
> I apologize if I missed some broader context where this definition makes sense. 
>  



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