Contribution Evaluation Data Shapley: Equitable Valuation of Data for Machine Learning A principled approach to data valuation for federated learning Measure contribution of participants in federated learning GTG-Shapley: Efficient and Accurate Participant Contribution Evaluation in Federated Learning Profit allocation for federated learning Fedcoin: A peer-to-peer payment system for federated learning Profit Allocation Hierarchical Incentive Mechanism Design for Federated Machine Learning in Mobile networks FAIR: Quality-Aware Federated Learning with Precise User Incentive and Model Aggregation Incentive Mechanism for Horizontal Federated Learning Based on Reputation and Reverse Auction