arXiv — Machine Learning · · 3 min read

UC-Search: Risk-Aware Test-Time Search for Delayed Constrained Time-Series Control

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Computer Science > Machine Learning

arXiv:2606.25274 (cs)
[Submitted on 24 Jun 2026]

Title:UC-Search: Risk-Aware Test-Time Search for Delayed Constrained Time-Series Control

Authors:Xibai Wang
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Abstract:Time-series models are usually scored as forecasters, yet deployed systems often require delayed decisions under uncertainty and hard feasibility constraints. UC-Search is a model-agnostic test-time wrapper: a backbone emits forecasts or action scores, a feasibility automaton rolls candidate paths forward, and bounded search returns the first action of a risk-adjusted feasible trajectory. We instantiate UC-Beam and a UCT-style UC-MCTS diagnostic, using epistemic, aleatoric, and propagated uncertainty mainly as path-risk terms. A myopic-collapse/separation theorem states when search reduces to one-step risk-greedy and when delayed feasible-set coupling can create non-myopic value. Primary evidence comes from a predeclared public $9$-family, $33$-series delayed-control suite with six held-out starts per series: UC-Pareto is positive versus validation-selected CEM, MPPI, and risk-aware random at the normalized threshold ($+3.1675/+2.3328/+2.5038$), and remains positive in a compute-matched audit ($+2.8466/+2.7418/+2.7429$). ETT/LTSF delayed-inventory validation supports the same compute-frontier claim. A 48-series raw M4 standard periodic-review lost-sales inventory audit is positive versus the strongest classic base-stock control ($+13556.7547$), CEM ($+64900.2207$), and risk-random ($+52881.6042$), while MPPI remains family-mixed. FI-2010, official-forecast adapters, SB3/FQI controls, direction/capacity/intervention checks, and synthetic mechanism tests are reported as boundary or mechanism evidence rather than broad dominance claims.
Subjects: Machine Learning (cs.LG); Artificial Intelligence (cs.AI)
Cite as: arXiv:2606.25274 [cs.LG]
  (or arXiv:2606.25274v1 [cs.LG] for this version)
  https://doi.org/10.48550/arXiv.2606.25274
arXiv-issued DOI via DataCite (pending registration)

Submission history

From: Xibai Wang [view email]
[v1] Wed, 24 Jun 2026 01:15:24 UTC (33 KB)
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