Gaussian mechanism

CHRONOS: Temporally-Aware Multi-Agent Coordination for Evolving Data Marketplaces

CHRONOS is a three-layer multi-agent architecture addressing temporal degradation in knowledge-graph data marketplaces, combining neural-ODE-based shortcut decay, changepoint-conditioned Shapley pricing, and EXP3-IX-driven differential privacy budget management. The system achieves 0.937 recall@10, 2.74 QPS, and 161ms latency under a total epsilon of 4.25 (delta=1e-6) using zCDP composition across four benchmarks. A key limitation noted is that at this privacy level, released valuations remain noise-dominated, with utility primarily derived from public index routing. The work provides formal guarantees including per-query recall-loss bounds and finite-sample Shapley error bounds under distribution shift.