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Shai Erera commented on LUCENE-7590: ------------------------------------ There are now few tasks left: * Add more statistics, such as {{sum}} and {{stdev}} (for numeric fields). Should we care about overflow, or only document it? * We can also compute more stats like what Solr gives in [Stats Component|https://cwiki.apache.org/confluence/display/solr/The+Stats+Component#TheStatsComponent-StatisticsSupported]. What do you think? * Add stats for {{SortedDocValues}}. This should be fairly straightforward by comparing the {{BytesRef}} of all matching documents. But I don't think we should have a {{mean}} stat for it? Likewise for {{SortedSetDocValues}}. * What should we do with {{SortedNumericDocValues}}? {{min}} and {{max}} are well defined, but what about {{mean}}? Should it be across all values? I intend to close this issue and handle the rest in follow-on issues, unless you think otherwise. Also, would appreciate your feedback on the above points. > Add DocValues statistics helpers > -------------------------------- > > Key: LUCENE-7590 > URL: https://issues.apache.org/jira/browse/LUCENE-7590 > Project: Lucene - Core > Issue Type: New Feature > Components: modules/misc > Reporter: Shai Erera > Assignee: Shai Erera > Attachments: LUCENE-7590.patch, LUCENE-7590.patch, LUCENE-7590.patch, > LUCENE-7590.patch, LUCENE-7590.patch, LUCENE-7590.patch, LUCENE-7590.patch > > > I think it can be useful to have DocValues statistics helpers, that can allow > users to query for the min/max/avg etc. stats of a DV field. In this issue > I'd like to cover numeric DV, but there's no reason not to add it to other DV > types too. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org