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MissDiag introduces a diagnostic evaluation framework that decomposes robustness in KGQA and KG-RAG systems under incomplete knowledge into typed evidence interventions for more interpretable comparisons.
KGCache is an in-memory cache for one-hop knowledge graph neighborhoods that reduces redundant subgraph retrieval in KGQA systems with LLMs. Evaluated on WebQSP and CWQ, it achieves up to 1.91x faster KG retrieval and shows semantic caching further improves hit rates.