Valentika, Nina, I Made Sumertajaya, Aji Hamim Wigena, and Farit Mochamad Afendi. 2026. “Robust PCA-Based Multivariate Time Series Clustering for Weekly Indonesian Food Commodity Prices With Missing Data”. Statistics, Optimization & Information Computing, July. https://doi.org/10.19139/soic-2310-5070-3618.