Journal
BUILDING AND ENVIRONMENT
Volume 162, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.buildenv.2019.106280
Keywords
Data fusion; Physics-based model; Machine learning; Feature selection; Occupancy prediction
Funding
- National Natural Science Foundation of China (NSFC) [51678127]
- National Scientific and Technological Support during the 12th FiveYear Plan Period [2013BAJ10B13]
- Beijing Advanced Innovation Center for Future Urban Design (UDC) [016010100]
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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.
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