TY - JOUR T1 - Cross-source sensing data fusion for building occupancy prediction with adaptive lasso feature filtering JF - Building and Environment Y1 - 2019 A1 - Wang, Wei A1 - Tianzhen Hong A1 - Xu, Ning A1 - Xu, Xiaodong A1 - Chen, Jiayu A1 - Shan, Xiaofang KW - data fusion KW - Feature selection KW - Machine learning KW - occupancy prediction KW - Physics-based model AB -

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.

VL - 162 JO - Building and Environment ER -