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Posted to dev@lucene.apache.org by "Jan Høydahl (JIRA)" <ji...@apache.org> on 2019/07/26 22:44:00 UTC
[jira] [Assigned] (LUCENE-6336) AnalyzingInfixSuggester needs
duplicate handling
[ https://issues.apache.org/jira/browse/LUCENE-6336?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jan Høydahl reassigned LUCENE-6336:
-----------------------------------
Assignee: (was: Jan Høydahl)
> AnalyzingInfixSuggester needs duplicate handling
> ------------------------------------------------
>
> Key: LUCENE-6336
> URL: https://issues.apache.org/jira/browse/LUCENE-6336
> Project: Lucene - Core
> Issue Type: Bug
> Affects Versions: 4.10.3, 5.0
> Reporter: Jan Høydahl
> Priority: Major
> Labels: lookup, suggester
> Attachments: LUCENE-6336.patch
>
>
> Spinoff from LUCENE-5833 but else unrelated.
> Using {{AnalyzingInfixSuggester}} which is backed by a Lucene index and stores payload and score together with the suggest text.
> I did some testing with Solr, producing the DocumentDictionary from an index with multiple documents containing the same text, but with random weights between 0-100. Then I got duplicate identical suggestions sorted by weight:
> {code}
> {
> "suggest":{"languages":{
> "engl":{
> "numFound":101,
> "suggestions":[{
> "term":"<b>Engl</b>ish",
> "weight":100,
> "payload":"0"},
> {
> "term":"<b>Engl</b>ish",
> "weight":99,
> "payload":"0"},
> {
> "term":"<b>Engl</b>ish",
> "weight":98,
> "payload":"0"},
> ---etc all the way down to 0---
> {code}
> I also reproduced the same behavior in AnalyzingInfixSuggester directly. So there is a need for some duplicate removal here, either while building the local suggest index or during lookup. Only the highest weight suggestion for a given term should be returned.
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