info:oai:khub.utp.edu.my:20622info:ofi/fmt:xml:xsd:journalHasnenSaidatul HasnizaHasnen, Saidatul HasnizaShahidMuhammadShahid, MuhammadZabiriH.Zabiri, H.TaqviSyed Ali AmmarTaqvi, Syed Ali Ammar09575820Process Safety and Environmental Protection2023Semi-supervised adaptive PLS soft-sensor with PCA-based drift correction method for online valuation of NOx emission in industrial water-tube boiler787 - 801172article