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

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

TitleCross-source sensing data fusion for building occupancy prediction with adaptive lasso feature filtering
Publication TypeJournal Article
Year of Publication2019
AuthorsWei Wang, Tianzhen Hong, Ning Xu, Xiaodong Xu, Jiayu Chen, Xiaofang Shan
JournalBuilding and Environment
Volume162
Pagination106280
Date PublishedJan-09-2019
ISSN03601323
Keywordsdata fusion, Feature selection, Machine learning, occupancy prediction, Physics-based model
Abstract

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.

DOI10.1016/j.buildenv.2019.106280
Short TitleBuilding and Environment