On Wed, Feb 23, 2011 at 11:13:59PM +0000, Joel Reymont wrote:
> Does Lucy support TF-IDF/cosine similarity like Lucene does?
Yes. The default scoring model is the same as Lucene's.
> Is there 'more like this' Lucene functionality or can it be easily
> implemented?
Lucy does not provide a MoreLikeThisQuery. In theory, it's not difficult to
implement, but some of the APIs you would need are not public yet.
MoreLikeThisQuery has been discussed before on the lucy-dev list. I have
misgivings about the algorithm that the Lucene implementation uses because the
results are noisy.
http://lucy.markmail.org/thread/rb5ruelwomgaj7lp
Best,
Marvin Humphrey
