Reliable Wireless Indoor Localization via Cross-Validated Prediction-Powered Calibration

• URL: http://arxiv.org/abs/2507.20268v2
• Date: Mon, 20 Oct 2025 07:55:53 GMT
• Title: Reliable Wireless Indoor Localization via Cross-Validated Prediction-Powered Calibration
• Authors: Seonghoon Yoo, Houssem Sifaou, Sangwoo Park, Joonhyuk Kang, Osvaldo Simeone,
• Abstract summary: This letter proposes an approach that efficiently uses limited calibration data to simultaneously fine-tune a predictor and estimate the bias of synthetic labels.<n> Experiments on a fingerprinting dataset validate the effectiveness of the proposed method.
• Score: 29.171927240331414
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Wireless indoor localization using predictive models with received signal strength information (RSSI) requires proper calibration for reliable position estimates. One remedy is to employ synthetic labels produced by a (generally different) predictive model. But fine-tuning an additional predictor, as well as estimating residual bias of the synthetic labels, demands additional data, aggravating calibration data scarcity in wireless environments. This letter proposes an approach that efficiently uses limited calibration data to simultaneously fine-tune a predictor and estimate the bias of synthetic labels, yielding prediction sets with rigorous coverage guarantees. Experiments on a fingerprinting dataset validate the effectiveness of the proposed method.

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