Privacy-preserving techniques Federated learning 8 Privacy preserving 8 Differential privacies 4 Learning systems 4 Privacy 4 privacy 4 Data privacy 3 Ho-momorphic encryptions 3 Homomorphic-encryptions 3 Internet of things 3 Network security 3 Secure multi-party computation 3 differential privacy 3 federated learning 3 Activity monitoring 2 Block-chain 2 Blockchain 2 Cloud-computing 2 Communication cost 2 Driver activity monitoring 2 Large dataset 2 Learning frameworks 2 Machine learning 2 Open-source 2 Open-source federated learning framework 2 Privacy protection 2 Security 2 Smartphones 2 User devices 2