Please use this identifier to cite or link to this item: https://hdl.handle.net/1822/85315

TitleEfficient tuning of k NN hyperparameters for indoor positioning with N-TBEA
Author(s)Montoliu, Raul
Perez-Navarro, Antoni
Torres-Sospedra, Joaquín
KeywordsIndoor positioning
Machine learning
Optimum parameter selection
Issue dateJan-2022
PublisherIEEE
JournalInternational Congress on Ultra Modern Telecommunications and Control Systems and Workshops
CitationR. Montoliu, A. Pérez-Navarro and J. Torres-Sospedra, "Efficient tuning of k NN hyperparameters for indoor positioning with N-TBEA," 2022 14th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT), Valencia, Spain, 2022, pp. 39-44, doi: 10.1109/ICUMT57764.2022.9943377.
Abstract(s)Machine Learning is a very popular approach for indoor positioning. However, most of models rely on a set of hyperparameters, which need to be properly set. When the number of hyperparameters is large, exploring all the combinations of values (what is known as brute force) can be computationally prohibitive, especially in those cases where the training or operational time is high, such as in the kNN algorithm in fingerprint-based indoor positioning. This paper introduces {N}-Tuple Bandit Evolutionary Algorithm (N-TBEA) to find the hyperparameters in this last case. N-TBEA is an efficient exploration technique which evaluates the feasibility of similar combinations of parameters. The results show that N-TBEA can provide a solution with an accuracy similar to the best combination of parameters retrieved using brute force, which shows the potential of N-TBEA to be used in other advanced machine learning models.
TypeConference paper
URIhttps://hdl.handle.net/1822/85315
ISBN9798350398663
DOI10.1109/ICUMT57764.2022.9943377
ISSN2157-0221
Publisher versionhttps://ieeexplore.ieee.org/document/9943377
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CAlg - Artigos em livros de atas/Papers in proceedings

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