Towards Machine-actionable FAIR Digital Objects with a Typing Model that Enables Operations

Abstract: FAIR Digital Objects support research data management aligned with the FAIR principles. To be machine-actionable, they must support operations that interact with their contents. This can be achieved by associating operations with FAIR-DO data types. However, current typing models and Data Type Registries lack support for type-associated operations. In this work, we introduce a typing model that describes type-associated and technology-agnostic FAIR Digital Object Operations in a machine-actionable way, building and improving on the existing concepts. In addition, we introduce the Integrated Data Type and Operations Registry with Inheritance System, a prototypical implementation of this model that integrates inheritance mechanisms for data types, a rule-based validation system, and the computation of type-operation associations. Our approach significantly improves the machine-actionability of FAIR Digital Objects, paving the way towards dynamic, interoperable, and reproducible research workflows.