I am very excited to announce the availability of Solr 4.4 with
RankingAlgorithm 1.5.1.
Solr 4.4 with RankingAlgorithm 1.5.1 adds a new algorithm complex-lsa.
complex-lsa simulates human language acquisition and recognition (see
demo <http://solr-ra.tgels.org/rankingsearchlsa.jsp>) and can retrieve
semantically related/hidden relationships between terms, sentences,
paragraphs, chapters, books, images, etc. Three new similarities,
TERM_SIMILARITY, DOCUMENT_SIMILARITY, TERM_DOCUMENT_SIMILARITY enable
these with improved precision.
Solr 4.4 with RankingAlgorithm 1.5.1 also includes realtime-search with
multiple granularities. realtime-search is very fast NRT and allows you
to not only lookup a document by id but also allows you to search in
realtime, see http://tgels.org/realtime-nrt.jsp. The update performance
is about 70,000 docs / sec. The query performance is in ms, allows you
to query a 10m wikipedia index (complete index) in <50 ms.
RankingAlgorithm 1.5.1 with complex-lsa supports the entire Lucene Query
Syntax, ± and/or boolean/dismax/glob/regular
expression/wildcard/fuzzy/prefix/suffix queries with boosting, etc. and
is compatible with the new Lucene 4.4 api.
You can get more information about complex-lsa and realtime-search
performance from here:
http://solr-ra.tgels.org/wiki/en/Complex-lsa-demo
http://solr-ra.tgels.org/wiki/en/Near_Real_Time_Search_ver_4.x
You can download Solr 4.4 with RankingAlgorithm 1.5.1 from here:
http://solr-ra.tgels.org
Please download and give the new version a try.
Regards,
Nagendra Nagarajayya
http://solr-ra.tgels.org
http://elasticsearch-ra.tgels.org
http://rankingalgorithm.tgels.org
Note:
1. Apache Solr 4.4 with RankingAlgorithm 1.5.1 is an external project.
2. realtime-search has been contributed back to Apache Solr, see
https://issues.apache.org/jira/browse/SOLR-3816
