FIG 2.

Schematic representation of the processes in a transparent distributed learning network. (A) Data preparation steps. (B) Distributed learning network, which is composed of three hospitals, each of which is equipped with a learning machine that can communicate with a master machine responsible for sending model parameters and checking convergence criteria. (C) Flowchart of the distributed learning network described in B. (D) Example of an action that can be tracked by blockchain (designed and implemented according to needs agreed among network members) and keep all network participants aware of any new activity taken in the network. DB, database; FAIR, findable, accessible, interoperable, reusable.