Novel Fine-Tuned Attribute Weighted Naïve Bayes NLoS Classifier for UWB Positioning

Fuhu Che, Qasim Ahmed, Fahd A. Khan, Faheem Khan

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


In this letter, we propose a novel Fine-Tuned attribute Weighted Naïve Bayes (FT-WNB) classifier to identify the Line-of-Sight (LoS) and Non-Line-of-Sight (NLoS) for UltraWide Bandwidth (UWB) signals in an Indoor Positioning System (IPS). The FT-WNB classifier assigns each signal feature a specific weight and fine-tunes its probabilities to address the mismatch between the predicted and actual class. The performance of the FT-WNB classifier is compared with the state-of-the-art Machine Learning (ML) classifiers such as minimum Redundancy Maximum Relevance (mRMR)- k -Nearest Neighbour (KNN), Support Vector Machine (SVM), Decision Tree (DT), Naïve Bayes (NB), and Neural Network (NN). It is demonstrated that the proposed classifier outperforms other algorithms by achieving a high NLoS classification accuracy of 99.7% with imbalanced data and 99.8% with balanced data. The experimental results indicate that our proposed FT-WNB classifier significantly outperforms the existing state-of-the-art ML methods for LoS and NLoS signals in IPS in the considered scenario.

Original languageEnglish
Article number10054400
Pages (from-to)1130-1134
Number of pages5
JournalIEEE Communications Letters
Issue number4
Publication statusPublished - 1 Apr 2023


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