GraphRAG Ablation Study: Adaptive Retrieval Beats Mandatory Knowledge Graphs
JeremyCMorgan · x · 2026-07-30
Ablation results from the PDE-Agents paper reveal how GraphRAG performs in a multi-agent finite element simulation framework:
- Mandatory KG Access: 94% success rate, but can cause stilted outputs.
- No KG: 100% success rate, but the model fabricates material properties.
- Adaptive Retrieval (KG Smart): Achieves 100% success with near-perfect material property fidelity.
The key takeaway is that intelligent retrieval policy orchestration is more critical than simply having better retrieval sources in complex agentic workflows.
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