There are several nice features in Lucene 2.2 (like spellchecking, more control over document weighting, faster,...). The Text Analytics Collection (TAC) has not upgraded to this new version. The primary "cost" associated with upgrading for Pipeline Pilot TAC users is that previously indexed databases would have to be reindexed. I am looking for feedback on the perceived benefits versus the cost of upgrading for our current TAC users. Also, any other information that you may have regarding important features to you or information on V2.2's actual performance that you may have is of iterest to me.

http://lucene.apache.org/#19+June+2007+-+Lucene+Java+2.2+available

Thanks in advance,
Nancy Latimer
Product Manager, TAC