リスク対応オンライン等角状態プロービング
Risk-Aware Online Conformal State Probing
状態予測モデルを利用し、最悪ケースの信頼性を保証しながらプロービングの頻度を最小化するオンライン等角状態プロービング(OCSP)を提案。既存の制御ポリシーに再学習なしで適用可能。
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著者: Pietro Talli, Petar Popovski, Osvaldo Simeone
分類: eess.SP, cs.AI
原文アブストラクト
AI-based autonomous agents, typically hosted at data centers, must acquire state information from robots or edge devices in order to issue informed control decisions. Managing uncertainty about the state is particularly consequential in safety-critical settings, in which average-case guarantees are insufficient. In this context, we study a sequential decision maker process that jointly decides which actions to take and when to probe given access to an arbitrary state prediction model. We propose online conformal state probing (OCSP), an action and probing policy that certifies worst-case reliability levels without relying on distributional assumptions. OCSP is designed to provably control the missed query error (MQE), i.e., the fraction of instances where probing would have been beneficial, while minimizing the probing rate. OCSP can be applied to existing pre-trained value-based control policies without requiring retraining or fine-tuning. We validate OCSP through numerical simulations to verify theoretical guarantees and to assess performance trade-offs as a function of the calibration of the state predictor.