Hi Mossaab, Probably due to the encodeNormValue/decodeNormValue transformation of the document length.
Please see the aforementioned methods in BM25Similarity.java Ahmet On Wednesday, November 9, 2016 10:25 PM, Mossaab Bagdouri <bagdouri_moss...@yahoo.fr.INVALID> wrote: Hi, On Lucene 6.2.1, I have the following explain output for a document that contain two words. I'm wondering why the value of fieldLength is not 2. A related question was posted on S.O. two years ago: http://stackoverflow.com/questions/22194920 23.637165 = sum of: 10.065297 = weight(title:googl in 401658357) [BM25Similarity], result of: 10.065297 = score(doc=401658357,freq=1.0 = termFreq=1.0 ), product of: 7.3866553 = idf(docFreq=414179, docCount=668609139) 1.3626325 = tfNorm, computed from: 1.0 = termFreq=1.0 1.2 = parameter k1 0.75 = parameter b 7.3254013 = avgFieldLength 2.56 = fieldLength 13.571868 = weight(title:hangout in 401658357) [BM25Similarity], result of: 13.571868 = score(doc=401658357,freq=1.0 = termFreq=1.0 ), product of: 9.960035 = idf(docFreq=31592, docCount=668609139) 1.3626325 = tfNorm, computed from: 1.0 = termFreq=1.0 1.2 = parameter k1 0.75 = parameter b 7.3254013 = avgFieldLength 2.56 = fieldLength Regards, Mossaab --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
