DiagnosingRetrieval-AugmentedGeneration

EvaluatingRAGsystems,however,presentsseveralchallenges: (1) modular complexity: The modular nature of RAG systems, comprising both a retriever and a generator, complicates the design of effective evaluation metrics. It is crucial to establish metrics that can holistically assess the entire system as well as evaluate the individual modules and their interplay [53],allowing for fully understanding the sources ofthe errors and misses and howthey aregenerated.