How to Evaluate Retrieval Quality in RAG Pipelines (Part 3): DCG@k and NDCG@k

The article discusses the final installment in a series on assessing retrieval quality in Retrieval-Augmented Generation (RAG) pipelines, focusing on graded evaluation metrics such as Discounted Cumulative Gain (DCG@k) and Normalized Discounted Cumulative Gain (NDCG@k). These metrics enable more nuanced measurement of retrieval effectiveness by accounting for the relevance ranking of retrieved documents, thereby improving the evaluation of RAG systems' performance in delivering pertinent information.