[
https://issues.apache.org/jira/browse/STANBOL-246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13058570#comment-13058570
]
Olivier Grisel commented on STANBOL-246:
----------------------------------------
Yes you are right. Though if we have the Shingle analyzer enabled for that
field that might work for bi-grams. I think the shingle analyzer might also be
configured for trigrams. However organization names can be 4 or 5 words long
and we cannot afford storing 4-grams or 5-grams index for DBpedia sized
knowledge bases I guess.
Maybe we should do some kind of many post-processing of the results to re-rank
then when there is an exact match in that case. Or maybe page rank score will
fix the issue.
> Exact name match should get boosted in the entity hub SolrYard indices
> ----------------------------------------------------------------------
>
> Key: STANBOL-246
> URL: https://issues.apache.org/jira/browse/STANBOL-246
> Project: Stanbol
> Issue Type: Bug
> Reporter: Olivier Grisel
> Assignee: Rupert Westenthaler
> Attachments: united_states_dbpedia_solrindex.json
>
>
> For instance, using the default embedded solryard index:
> {code}
> curl -X POST -d "name=United States&limit=10&offset=0"
> http://localhost:8080/entityhub/site/dbpedia/find
> {code}
> The first results are "United States Navy" and "United States Air Force" and
> finally "United States" comes in the third position. See the attached JSON
> output.
> Exact name match (or close to exact matches) should get a score boost. This
> can probably be implemented with FuzzyQuery and minSimilarity of 0.8f for
> instance.
> https://lucene.apache.org/java/3_3_0/api/all/org/apache/lucene/search/FuzzyQuery.html
> Maybe in this case the popularity boost are bad because of the naive incoming
> links. Using a Page Rank style centrality score might work better in this
> case:
> https://github.com/julienledem/Pig-scripting-examples/tree/master/Page%20Rank
> https://github.com/mesos/spark/blob/master/bagel/src/main/scala/spark/bagel/examples/WikipediaPageRank.scala
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
