The invention relates to the related technical field of
digital data processing, in particular to a personalized
federated learning method and
system for a heterogeneous multi-source
industrial internet, and the method comprises the steps: connecting a
client, evaluating a load, time
delay and
modal similarity to generate a dynamic association table, deploying a hierarchical
encryption protocol, and constructing a
priority queue; a cache mechanism is set to coordinate distributed iterative optimization, so that the technical problem that network oscillation and computing resource waste are aggravated due to overhigh load of part of nodes caused by frequent access and exit of equipment and data volume difference in the
industrial internet and repeated migration of clients and nodes is caused is solved, cross-equipment
shared knowledge base vectors are extracted, and the computing efficiency is improved. The technical effects of reducing the influence of model isomerism on aggregation, dynamically scheduling high-frequency parameter local aggregation and low-frequency parameter cloud synchronization, optimizing the association weight of a
client and a
fog node in real time, realizing
privacy protection and efficient personalized
federated learning, and ensuring the privacy and security of user data in the training process are achieved.