The invention relates to the technical field of data protection, and discloses a
privacy protection type data joint modeling method based on
federated learning, which comprises the following steps: acquiring local data to perform meta-
feature extraction, calculating key statistics to characterize data characteristics, collecting meta-features, grouping the meta-features into similar feature clusters through spectral clusters, and carrying out feature clustering on the similar feature clusters; dynamically allocating and calculating resource weights according to the similar characteristic cluster scale and the equipment computing power; distributing a basic privacy budget according to the
client type, calculating a local model accuracy rate and an intra-cluster level difference, dynamically adjusting the privacy budget, adding adaptive
Gaussian noise based on the privacy budget, and adjusting gradient sensitivity of gradient calculation; verifying gradient compliance through zero knowledge, carrying out safe aggregation on gradients passing
verification, optimizing a meta-model through a knowledge
distillation loss function, and generating confrontation sample analysis to obtain a leakage risk value to identify knowledge leakage risks; sensitive neurons in the
neuron sensitivity positioning
element model are analyzed and calculated, directional
noise is injected, and initial parameters are adjusted for initialization training.