Article 2 human 2 Attack detection 1 Baum-Welch 1 Baum-Welch algorithms 1 COVID-19 1 CT scan 1 Computerized tomography 1 Databases, Factual 1 Deep Learning 1 Deep learning 1 Detection models 1 Diagnosis 1 Evolutionary algorithms 1 Hidden Markov Model 1 Hidden Markov models 1 Hidden markov 1 Hidden-Markov models 1 Humans 1 Image segmentation 1 Important features 1 Initial segmentation 1 Interactive refinement 1 K-means clustering 1 Learning-based segmentation 1 Lung 1 Modeling parameters 1 Multi-step attack detection 1 Multi-step attacks 1 Optimization 1