AI RESEARCH
Tokenised Flow Matching for Hierarchical Simulation Based Inference
arXiv CS.LG
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ArXi:2604.20723v1 Announce Type: new The cost of simulator evaluations is a key practical bottleneck for Simulation Based Inference (SBI). In hierarchical settings with shared global parameters and exchangeable site-level parameters and observations, this structure can be exploited to improve simulation efficiency. Existing hierarchical SBI approaches factorise the posterior yet still simulate across multiple sites per