Federated learning 4 Secure multi-party computation 4 Privacy-preserving techniques 3 privacy 3 Activity monitoring 2 Cryptography 2 Differential privacies 2 Driver activity monitoring 2 Ho-momorphic encryptions 2 Homomorphic-encryptions 2 Learning frameworks 2 Multiparty computation 2 Open-source 2 Open-source federated learning framework 2 Privacy 2 Smartphones 2 differential privacy 2 driver activity monitoring 2 federated learning 2 homomorphic encryption 2 open-source federated learning frameworks 2 secure multi-party computations 2 Aggregates 1 Committee selection 1 Communication complexity 1 Communication cost 1 Communication graph 1 Communication graphs 1 Computation theory 1 Computational efficiency 1