DVFL: A Vertical Federated Learning Method for Dynamic Data
This addresses the problem of dynamic data in VFL for organizations with disjoint features, but it is incremental as it adapts an existing paradigm to a new scenario.
The paper tackles the problem of vertical federated learning (VFL) in dynamic data scenarios, where existing methods are limited to static data, and proposes DVFL, which uses knowledge distillation to adapt to data distribution changes while maintaining local computations for security and efficiency, achieving results close to existing VFL methods in static scenes and adapting to dynamic changes.
Federated learning, which solves the problem of data island by connecting multiple computational devices into a decentralized system, has become a promising paradigm for privacy-preserving machine learning. This paper studies vertical federated learning (VFL), which tackles the scenarios where collaborating organizations share the same set of users but disjoint features. Contemporary VFL methods are mainly used in static scenarios where the active party and the passive party have all the data from the beginning and will not change. However, the data in real life often changes dynamically. To alleviate this problem, we propose a new vertical federation learning method, DVFL, which adapts to dynamic data distribution changes through knowledge distillation. In DVFL, most of the computations are held locally to improve data security and model efficiency. Our extensive experimental results show that DVFL can not only obtain results close to existing VFL methods in static scenes, but also adapt to changes in data distribution in dynamic scenarios.