The localization speed and accuracy in the indoor scenario can greatly impact the Quality of Experience of the user. While many individual machine learning models can achieve comparable positioning performance, their prediction mechanisms offer different complexity to the system. In this work, we propose a fingerprinting positioning method for multi-building and multi-floor deployments, composed of a cascade of three models for building classification, floor classification, and 2D localization regression. We conduct an exhaustive search for the optimally performing one in each step of the cascade while validating on 14 different openly available datasets. As a result, we bring forward the best-performing combination of models in terms of overall positioning accuracy and processing speed and evaluate on independent sets of samples. We reduce the mean prediction time by 71% while achieving comparable positioning performance across all considered datasets. Moreover, in case of voluminous training dataset, the prediction time is reduced down to 1% of the benchmark's.
|Title of host publication||2022 International Conference on Localization and GNSS, ICL-GNSS 2022 - Proceedings|
|Editors||Jari Nurmi, Elena-Simona Lohan, Joaquin Torres Sospedra, Heidi Kuusniemi, Aleksandr Ometov|
|Number of pages||7|
|Publication status||Published - 2022|
|Publication type||A4 Article in conference proceedings|
|Event||International Conference on Localization and GNSS - Tampere, Finland|
Duration: 7 Jun 2022 → 9 Jun 2022
|Name||International Conference on Localization and GNSS|
|Conference||International Conference on Localization and GNSS|
|Period||7/06/22 → 9/06/22|
- Indoor positioning
- Machine learning
- Prediction speed
Publication forum classification
- Publication forum level 1
ASJC Scopus subject areas
- Computer Networks and Communications
- Aerospace Engineering
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Supplementary materials for "Towards Accelerated Localization Performance Across Indoor Positioning Datasets"
Klus, L. (Creator), Quezada Gaibor, D. (Creator) & Torres-Sospedra, J. (Creator), 6 Jun 2022