[jira] Commented: (SOLR-153) Facet Index

["Peter Karich (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12921322#action_12921322 ] 

Peter Karich commented on SOLR-153:
-----------------------------------

Yonik, is this an implementation of the tree described here:

http://www.cs.cmu.edu/~ddash/papers/facets-cikm.pdf

??

> Facet Index
> -----------
>
>                 Key: SOLR-153
>                 URL: https://issues.apache.org/jira/browse/SOLR-153
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Yonik Seeley
>         Attachments: facettree.patch, facettree.patch
>
>
> A facet index, initially for non-hierarchical facets.
> Start with all terms, and a set of documents for each term.  Group lower level nodes by taking the union of the sets, but keep track of the largest set going back all the way to the leaves (the max doc-freq for that node).

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