On Tue, Mar 6, 2012 at 5:57 PM, Paul Taylor <paul_t...@fastmail.fm> wrote: >> Hello, >> >> what is previously Similarity in older releases is moved to >> TFIDFSimilarity: it extends Similarity and exposes a vector-space API, >> with its same formulas in the javadocs: >> >> https://builds.apache.org/view/G-L/view/Lucene/job/Lucene-trunk/javadoc/core/org/apache/lucene/search/similarities/TFIDFSimilarity.html >> > Looks good, do you know if this stuff will make it into 3.6 ? > > Paul
It won't (will have to be in 4.0) for two main reasons: * The changes are fairly intrusive and would break API backwards-compatibility everywhere. * All of the added scoring systems require index statistics that are new in Lucene 4.0 The last one being the biggest dealbreaker: and it would be difficult to wedge into the Lucene 3.x implementation, because terms aren't cleanly separated per-field, etc, etc. -- lucidimagination.com --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
