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Data-driven Sensor Placement for Predictive Applications:...
[Submitted on 26 Oct 2025 (v1), last revised 25 Jun 2026 (this v · 2026-06-26 · via cs.LG updates on arXiv.org

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Abstract:Optimal sensor placement (OSP) is critical for efficient, accurate monitoring, control, and inference in complex physical systems. We propose a machine-learning-based feature attribution (FA) framework to identify OSP for target predictions. FA quantifies input contributions to a model output; however, it struggles with highly correlated input data often encountered in practical applications for OSP. To address this, we propose a Correlation-Assisted Attribution Framework (CAAF), which introduces a clustering step on the candidate sensor locations before performing FA to reduce redundancy and enhance generalizability. We first illustrate the core principles of the proposed framework through a series of validation cases, then demonstrate its effectiveness in realistic dynamical systems such as structural health monitoring, airfoil lift prediction, and wall-normal velocity estimation for turbulent channel flow. The results show that the CAAF outperforms alternative approaches that typically struggle due to the presence of nonlinear dynamics, chaotic behavior, and multi-scale interactions, and enables the effective application of FA for identifying OSP in real-world environments.

Submission history

From: Sze Chai Leung [view email]
[v1] Sun, 26 Oct 2025 03:50:16 UTC (16,942 KB)
[v2] Fri, 3 Apr 2026 23:16:19 UTC (18,062 KB)
[v3] Thu, 25 Jun 2026 00:44:57 UTC (16,270 KB)