Abstract
In recent years WiFi became the primary source of information to locate a person or device indoor. Collecting RSSI values as reference measurements with known positions, known as WiFi fingerprinting, is commonly used in various positioning methods and algorithms that appear in literature. However, measuring the spatial distance between given set of WiFi fingerprints is heavily affected by the selection of the signal distance function used to model signal space as geospatial distance. In this study, the authors proposed utilization of machine learning to improve the estimation of geospatial distance between fingerprints. This research examined data collected from 13 different open datasets to provide a broad representation aiming for general model that can be used in any indoor environment. The proposed novel approach extracted data features by examining a set of commonly used signal distance metrics via feature selection process that includes feature analysis and genetic algorithm. To demonstrate that the output of this research is venue independent, all models were tested on datasets previously excluded during the training and validation phase. Finally, various machine learning algorithms were compared using wide variety of evaluation metrics including ability to scale out the test bed to real world unsolicited datasets.
Original language | English |
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Title of host publication | 12th International Conference on Indoor Positioning and Indoor Navigation 2022 |
Publisher | IEEE |
ISBN (Electronic) | 9781728162188 |
DOIs | |
Publication status | Published - 26 Oct 2022 |
Event | 12th International Conference on Indoor Positioning and Indoor Navigation 2022 - Beijing, China Duration: 5 Sept 2022 → 7 Sept 2022 |
Conference
Conference | 12th International Conference on Indoor Positioning and Indoor Navigation 2022 |
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Abbreviated title | IPIN 2022 |
Country/Territory | China |
City | Beijing |
Period | 5/09/22 → 7/09/22 |
Keywords
- distance estimation indoor positioning
- machine learning
- RSSI
- supervised learning
- WiFi fingerprinting
ASJC Scopus subject areas
- Computer Networks and Communications
- Information Systems