get cosine similarity between two documents in lucene

Question

i have built an index in Lucene. I want without specifying a query, just to get a score (cosine similarity or another distance?) between two documents in the index.

Answer 1

Calculating Cosine Similarity in Lucene Version 4.x is different than those from 3.x. Following post has detailed explanation with all the necessary code for calculating cosine similarity in Lucene 4.10.2. ComputerGodzilla: Calculated Cosine Similarity in Lucene!