@misc{10481/55293, year = {2018}, month = {1}, url = {http://hdl.handle.net/10481/55293}, abstract = {Multivariate Statistical Process Control (MSPC) based on Principal Component Analysis (PCA) is a well-known methodology in chemometrics that is aimed at testing whether an industrial process is under Normal Operation Conditions (NOC). As a part of the methodology, once an anomalous behaviour is detected, the root causes need to be diagnosed to troubleshoot the problem and/or avoid it in the future. While there have been a number of developments in diagnosis in the past decades, no sound method for comparing existing approaches has been proposed. In this paper, we propose such a procedure and use it to compare several diagnosis methods using randomly simulated data and from realistic data sources. This is a general comparative approach that takes into account factors that have not previously been considered in the literature. The results show that univariate diagnosis is more reliable than its multivariate counterpart.}, keywords = {MSPC}, keywords = {diagnosis}, keywords = {Contribution Plots}, keywords = {PCA}, keywords = {Networkmetrics}, keywords = {Smearing}, title = {Evaluation of Diagnosis Methods in PCA-based Multivariate Statistical Process Control}, doi = {https://doi.org/10.1016/j.chemolab.2017.12.008}, author = {Fuentes García, Noemí Marta and Macía Fernández, Gabriel and Camacho Páez, José}, }