background merge hit exception

Hello again, A little background of our experiment. We are storing lucene (version 4.6.0) on top of cassandra. We are using the demo IndexFiles.java from the lucene with minor modification such that the directory used is reference to the CassandraDirectory. With large dataset (that is, index more

RE: Ranking Function based on Probabilistic Retrieval Framework

Hi, Lucene 4 has this already: e.g. to enable BM25 ranking use the following Similarity implementation and set it on IndexWriter and IndexSearcher: http://lucene.apache.org/core/4_7_1/core/org/apache/lucene/search/similarities/BM25Similarity.html The full list is here and documentation is here:

Re: Ranking Function based on Probabilistic Retrieval Framework

Hi Prakash, Have you seed Robert's write up? http://java.dzone.com/news/flexible-ranking-lucene-4 Ahmet On Thursday, April 3, 2014 2:30 PM, Prakash Dubey wrote: Dear all, Why there is no Ranking function based on Probabilistic Retrieval Framework

Ranking Function based on Probabilistic Retrieval Framework

Dear all, Why there is no Ranking function based on Probabilistic Retrieval Framework (ex.Okapi BM25) in Lucene. Actually there is third party implementation of the BM25 Model but it is no longer