ENVRI Reference Model (RM) Information Viewpoint components Alex Hardisty School of Computer Science & Informatics email: hardistyar@cardiff.ac.uk /alexhardisty

ENVRI RM V 2.2 Science Information Computational Engineering What is the ENVRI RM? Science Information Allows to build models with different abstractions to represent complex composite systems Supports dialogue between different stakeholder groups Developed based on needs of 20 ENV Research Infrastructures Computational Engineering Technology The ENVRI References Model allows building models at different levels of detail to represent complex composite systems. ENVRI RM V 2.2 Open Distributed Processing (ODP) ISO/IEC 10746 http://envri.eu/rm

Typical research data lifecycle The gathering of requirements during ENVRIplus discovered the relevance of data processing in RIs as a common set of phases. This evolved in the notion of a general research data lifecycle which is observed by most RIs regardless of the areas of interest of the RI concerned. The five phases of the cycle are Acquisition, Curation, Publishing, Processing, and Use. In the Acquisition phase, data is generated, collected or received. In the Curation phase, data is prepared for long term preservation by storing it safely, adding metadata, and a persistent identifier. In the Publishing phase, data is made publicly available. In the processing phase, data is used to create new data products such as aggregations, visualisations, summaries, among others. In the use phase, the data products are exploited to derive new data products, which can be in turn make their way into the RI repository for preservation, restarting the cycle

RI systems & their environment ENVRI RM Viewpoints Scientific: The Domain in which the systems will operate Computational viewpoint Information Engineering Technology RI systems & their environment Science Design: The processing units that handle digital objects Information: The digital objects and their lifecycle Distribution: The strategies to distribute processing units and data resources Implementation: Standards and technologies used to implement systems

Information Viewpoint (IV) Provides a common abstract model about the shared research data handled by the infrastructure. Focus on the data without considering any platform-specific or implementation details. Independent from the computational interfaces and functions that manipulate the data or the nature of technology used to store it. Specifies the types of the IV objects and the relationships between those types. The main purpose of this viewpoint is to provide an abstract model of the lifecycles of the information objects handled by the RI.

Information Viewpoint What is the ENVRI RM? Information Viewpoint Object state is the attribute that determines the actions that can be performed on a given object. The state changes, together with the Action types can be used to model behaviour of data as it is managed through its lifecycle by a Research Infrastructure. Actions collect data QA/QC data store data start stop Objects Information Viewpoint objects and actions are used to represent the lifecycle of data objects produced and consumed by the research infrastructure digitised readings [raw] data asset [quality assured] data asset [stored]