Identifying Population Movements with Non-Negative Matrix Factorization from Wi-Fi User Counts in Smart and Connected Cities
This work addresses the need for privacy-preserving population movement analysis in smart city infrastructure, though it appears incremental as it builds on existing NMF techniques with a specific adaptation.
The paper tackled the problem of identifying human movement patterns in smart cities by applying Non-Negative Matrix Factorization with a novel matrix embedding to Wi-Fi user count data from the University of Colorado at Boulder Campus, resulting in an automated method for detecting population movements.
Non-Negative Matrix Factorization (NMF) is a valuable matrix factorization technique which produces a "parts-based" decomposition of data sets. Wi-Fi user counts are a privacy-preserving indicator of population movements in smart and connected urban environments. In this paper, we apply NMF with a novel matrix embedding to Wi-Fi user count data from the University of Colorado at Boulder Campus for the purpose of automatically identifying patterns of human movement in a Smart and Connected infrastructure environment.