Federated Learning System and Federated Learning Method

A federated learning system using a smart-contract-based blockchain technology, the system comprising an initial federated learning model sharing contract that is a smart contract used to cause a second information processing apparatus that trains a model to share an initial federated learning model included in a first information processing apparatus that requests federated learning, the smart contract including reward information on a reward as a token that a user of the first information processing apparatus receives from a user of the second information processing apparatus for the sharing of the initial federated learning model.

A federated learning method using a smart-contract-based blockchain technology, the method comprising:

• a first information processing apparatuses' causing a second information processing apparatus to share an initial federated learning model, using an initial federated learning model sharing contract that is a smart contract used to allow the first information processing apparatus to cause the second information processor that trains a model to share the initial federated learning model;
• and
• the first information processing apparatuses' acquiring a reward as a token when the second information processing apparatus shares the initial federated learning model.