Measure Contribution of Participants in Federated Learning
This addresses fair credit allocation for participants in federated learning, but it appears incremental as it applies known methods to this specific context.
The paper tackled the problem of fairly measuring contributions of participants in federated learning to enable credit allocation, developing techniques for both horizontal and vertical FML using deletion methods and Shapley values.
Federated Machine Learning (FML) creates an ecosystem for multiple parties to collaborate on building models while protecting data privacy for the participants. A measure of the contribution for each party in FML enables fair credits allocation. In this paper we develop simple but powerful techniques to fairly calculate the contributions of multiple parties in FML, in the context of both horizontal FML and vertical FML. For Horizontal FML we use deletion method to calculate the grouped instance influence. For Vertical FML we use Shapley Values to calculate the grouped feature importance. Our methods open the door for research in model contribution and credit allocation in the context of federated machine learning.