Blockchain-based ai model training method

A blockchain-based AI model training method, comprising:

• building an original AI model according to features of data sets;
• randomly allocating participants in a training process proportionally into three categories:
• a model trainer, a model verifier and a model uploader, prior to start of each round of training of the original AI model;
• during each round of training, obtaining, by the model trainer and the model verifier, global models of a last round from a blockchain, respectively, and training the global models through using local data sets to generate respective partial models of a current round;
• checking, by the model verifier, partial models generated by the model trainer through using partial models generated locally;
• aggregating, by the model uploader, all partial models passing the checking of the model verifier to obtain a global model of the current round, and packing the global model, checking results and all the partial models of the current round to the blockchain.