Cross-source sensing data fusion for building occupancy prediction with adaptive lasso feature filtering

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

26 Scopus Citations
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  • Tianzhen Hong
  • Ning Xu
  • Xiaodong Xu


Original languageEnglish
Article number106280
Journal / PublicationBuilding and Environment
Online published13 Jul 2019
Publication statusPublished - Sept 2019


Fusing various sensing data sources can significantly improve the accuracy and reliability of building occupancy detection. Fusing environmental sensors and wireless network signals are seldom studied for its computational and technical complexity. This study aims to propose an integrated adaptive lasso model that is able to extract critical data features for environmental and Wi-Fi probe dual sensing sources. Through rapid feature extraction and process simplification, the proposed method aims to improve the computational efficiency of occupancy detecting models. To validate the proposed model, an onsite experiment was conducted to examine two occupancy data resolutions, (real-time and four-level occupancy resolutions). The results suggested that, among all twelve features, eight features are most relevant. The mean absolute error of the real-time occupancy can be reduced to 2.18 and F1_accuracy is about 84.36% for the four-level occupancy.

Research Area(s)

  • Data fusion, Feature selection, Machine learning, Occupancy prediction, Physics-based model