Chronic Obstructive Pulmonary Disease (COPD) is a life-threatening lung ailment and a significant cause of morbidity and fatality globally. The early detection of COPD can provide timely proper medication and reduce the mortality rate. To obtain proper treatment and lessen the death rate. this study proposes a novel ensemble model: the Multistage Ensemble model (MSEN) with an optimize... https://thebrickes.shop/product-category/placemat/