Cloud computing Cloud-computing 5 Digital storage 5 Network security 5 Security 4 Cloud security 3 Computational modeling 3 Cryptography 3 Data privacy 3 Edge computing 3 Information systems 3 Attribute-based encryptions 2 China 2 Cloud Computing 2 Cloud computing technologies 2 Computer architecture 2 Distributed systems 2 E-learning 2 Efficiency 2 Energy efficiency 2 Energy utilization 2 Federated Learning 2 Federated learning 2 Information security 2 Scheduling 2 Security of data 2 numerical model 2 AHP–entropy method 1 Abstracting 1 Academic literature 1