Is there any particular reason that you find Lucene's builtin TF/IDF and BM25 similarity models insufficient for your needs? In any case, examination of their source code should get you started if you with to do your own:
https://lucene.apache.org/core/5_3_0/core/org/apache/lucene/search/similarities/TFIDFSimilarity.html https://lucene.apache.org/core/5_3_0/core/org/apache/lucene/search/similarities/BM25Similarity.html -- Jack Krupansky On Sun, Dec 13, 2015 at 8:30 AM, Shay Hummel <shay.hum...@gmail.com> wrote: > Hi > > I need help to implement similarity between query model and document model. > I would like to use the JS-Divergence > <https://en.wikipedia.org/wiki/Jensen%E2%80%93Shannon_divergence> for > ranking documents. The documents and the query will be represented > according to the language models approach - specifically the LMDiriclet. > The similarity will be calculated using the JS-Div between the document > model and the query model. > Is it possible? > if so how? > > Thank you, > Shay Hummel > -- > Regards, > Shay Hummel >
