Hi, I want to change the default scoring formula of lucene and one of the changes I want to perform is on the idf term. What I want to do is to include the average number of terms of the documents indexed in the collection in the idf method of the Similarity class.
In order to change the scoring formula I'm planning to implement a subclass of DefaultSimilarity and use the new class by calling IndexWriter.setSimilarity before indexing and Searcher.setSimilarity before searching. The fact that lucene requests the new class to be used while creating the index makes me wonder if it is possible to have a scoring formula with an idf term that includes the average number of terms of documents being indexed(an average which will be available only when all the documents are indexed) So is there a way to have access in the average number of document terms inside the idf method of Similarity class?? thank you in advance -- View this message in context: http://old.nabble.com/Scoring-formula---Average-number-of-terms-in-IDF-tp26282578p26282578.html Sent from the Lucene - Java Users mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
