Cluster Analysis for Automated Operational Modal Analysis: A Review M. Danial A. Hasan, Z. A. B. Ahmad, M. Salman Leong, L. M. Hee and M. Haffizzi Md. Idris MATEC Web Conf., 255 (2019) 02012 Published online: 16 January 2019 DOI: 10.1051/matecconf/201925502012