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Author

Ayu Afrinah

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Open access 2026

A Multivariate Functional CUSUM Control Chart for High-Dimensional Process Monitoring: Application to Air Quality

This study proposes a multivariate functional CUSUM (MFCUSUM) control chart for Phase II monitoring of high-dimensional multivariate functional data. The proposed framework combines B-spline smoothing, multivariate functional principal component analysis (MFPCA), whitening transformation, and CUSUM accumulation, with c...

Ayu Afrinah, M. Mashuri, M. Ahsan · 0 citations

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