Biometrics. 2026 Jun 17:ujag113. doi: 10.1093/biomtc/ujag113. Online ahead of print.
ABSTRACT
This discussion provides commentary on the paper “INTACT: A method for integration of longitudinal physical activity data from multiple sources” by Jingru Zhang, Erjia Cui, Hongzhe Li, and Haochang Shou. The authors introduce an FPCA-based approach for integrating information from multiple sources with longitudinal measurements. We focus on the paper’s covariance-eigensystem assumptions and discuss how covariance alignment facilitates knowledge integration and transfer in functional and longitudinal settings.
PMID:42306831 | DOI:10.1093/biomtc/ujag113
