Update README.md

README.md

@@ -82,6 +82,9 @@ ChanceRAG is a Retrieval-Augmented Generation (RAG) application designed to proc
     0.5 for vector scores,
     0.3 for BM25 scores,
     0.2 for PageRank scores
+
+* The combined scores are normalized between 0 and 1 to make them more interpretable and comparable. The minimum score is mapped to 0 and the maximum to 1.
+
 * The documents are sorted based on the combined scores in descending order. The top 5 documents are returned with their text.