Layers, Workflows and Functional Entities Sample Clauses

Layers, Workflows and Functional Entities. ‌ The proposed PoF Functional Model is made up of three layers, namely the Core Layer, the Remember & Forget Layer and the Evolution Layer : • the Core Layer considers the basic functionalities required for connecting the Active System and the DPS; • building upon this layer, the Remember & Forget Layer introduces the brain-inspired and forgetful aspects into the PoF Reference Model implementing more advanced functionalities for the preservation preparation and the re-activation workflow; • finally, the Evolution Layer, is responsible for all types of functionalities dealing with long-term change and evolution. The different workflows and functional entities in the PoF Functional Model are associated to the three model layers above, as summarized in Table 1 and depicted in Figure 2. The description of the layers, workflows and functional entities is provided in the next sections. Note, that some workflows are stepwise refined in the more complex layers. An overview of the PoF Functional Model components (layers, workflows, functional enti- ties) is depicted in Figure 2: within each layer box the relevant entities and workflows are shown. In the following Sections we provide a more detailed representation of each work- flow, with the steps associated to each process and the involved entities. It is worth noting that Figure 2 already makes some assumptions about the functionalities implemented in the Active System and, especially, the DPS: those functionalities, which are parts of one of the respective systems, are not explicitly listed in the PoF Reference Model. For our purpose, we assume a OAIS compliant DPS implementing functionalities such as Ingest, Data Management, Archival Storage and Access of preserved content: in Figure 2 we omitted all OAIS compliant entities but the Preservation Planning, due to its relevance in Figure 2: High Level Functional View of the PoF Reference Model Model Layers Workflows Functional Entities Core Layer Preservation Preparation (basic) Re-activation (basic) ID Management Exchange Support Remember & Forget Layer Preservation Preparation Re-activation Content Value Assessment Managed Forgetting & Appraisal De-contextualization Contextualization Preservation Contract Management Re-contextualization Search & Navigation Metadata Management Evolution Layer Situation Change Setting Change System Change (Active System Change and Preservation Sys- tem Change) Content Value Re-assessment Evolution Monitoring Context Evolution Mana...