DAILOC: Domain-Incremental Learning for Indoor Localization using Smartphones

• URL: http://arxiv.org/abs/2506.15554v1
• Date: Wed, 18 Jun 2025 15:27:40 GMT
• Title: DAILOC: Domain-Incremental Learning for Indoor Localization using Smartphones
• Authors: Akhil Singampalli, Danish Gufran, Sudeep Pasricha,
• Abstract summary: Wi-Fi fingerprinting-based indoor localization faces significant challenges in real-world deployments.<n>Existing approaches often address these issues independently, resulting in poor generalization and susceptibility to catastrophic forgetting over time.<n>We propose DAILOC, a novel domain-incremental learning framework that jointly addresses both temporal and device-induced domain shifts.
• Score: 2.9699290794642366
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Wi-Fi fingerprinting-based indoor localization faces significant challenges in real-world deployments due to domain shifts arising from device heterogeneity and temporal variations within indoor environments. Existing approaches often address these issues independently, resulting in poor generalization and susceptibility to catastrophic forgetting over time. In this work, we propose DAILOC, a novel domain-incremental learning framework that jointly addresses both temporal and device-induced domain shifts. DAILOC introduces a novel disentanglement strategy that separates domain shifts from location-relevant features using a multi-level variational autoencoder. Additionally, we introduce a novel memory-guided class latent alignment mechanism to address the effects of catastrophic forgetting over time. Experiments across multiple smartphones, buildings, and time instances demonstrate that DAILOC significantly outperforms state-of-the-art methods, achieving up to 2.74x lower average error and 4.6x lower worst-case error.

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