On 08/02/2012 09:17, Ted Dunning wrote:
This is true with Lucene as it stands. It would be much faster if there were a specialized in-memory index such as is typically used with high performance search engines.
This could be implemented in Lucene trunk as a Codec. The challenge though is to come up with the right data structures.
There has been some interesting research on optimizations for in-memory inverted indexes, but it usually involves changing the query evaluation algos as well - for reference:
http://digbib.ubka.uni-karlsruhe.de/volltexte/documents/1202502 http://www.siam.org/proceedings/alenex/2008/alx08_01transierf.pdf http://research.google.com/pubs/archive/37365.pdf -- Best regards, Andrzej Bialecki <>< ___. ___ ___ ___ _ _ __________________________________ [__ || __|__/|__||\/| Information Retrieval, Semantic Web ___|||__|| \| || | Embedded Unix, System Integration http://www.sigram.com Contact: info at sigram dot com
