GRANT AGREEMENT: 601138 | SCHEME FP7 ICT 2011.4.3 Promoting and Enhancing Reuse of Information throughout the Content Lifecycle taking account of Evolving Semantics [Digital Preservation]

PERICLES Art & Media Domain Ontologies Panos Mitzias (CERTH/ITI)

◦Upper-level ontology: Linked Resource Model (LRM)

◦Domain ontology: Art and Media, with sub-domainsDigital Video Art (DVA)Software-based Art (SBA)Born-digital Archives (BDA)

Ontologies in PERICLES

Main notions adopted from LRM in the Art and Media ontology:

◦Resource◦Agent◦Activity◦Dependency◦Description

LRM Adoption

◦AbstractResource: Conceptual representation of an entity. ◦ConcreteResource: Concrete realization of an abstract resource.◦AggregatedResource: A set of multiple resources.

Abstract / Concrete / Aggregated Resource

AbstractResource

AggregatedResource

∩

ConcreteResource

ConcreteResource_1

ConcreteResource_2

ConcreteResource_N

realizedAs hasPart

...

AbstractResourcerealizedAs

ConcreteResource

Example - realizedAs

Agent: The “bearer” of change to the ecosystem.i.e. someone or something that brings change to a resource or participates in an activity.

Subclasses*: ◦ HumanAgent (individual, group, organization, etc.)◦ SoftwareAgent (operating system, media player, etc.)

* extensions to LRM

Agent

Activity: Temporal entity that represents an action or set of actions.

Subclasses*: ◦ CreationActivity◦ AcquisitionActivity◦ MigrationActivity◦ etc.

* extensions to LRM

Activity

Dependency

lrm:Resource_1

lrm:Dependency

lrm:Resource_2 lrm:Resource_N...

lrm:Description

lrm:Descriptionlrm:Plan

lrm:Plan

lrm:Resource_Μ...

Example - Data Dependency

◦ HardwareDependencySpecifies hardware requirements for a(n) (Abstract or Concrete or SoftwareAgent or Digital) Resource, or relations among them, in order for the Resource to function properly.

◦ SoftwareDependencyIndicates the dependency of a Resource or Activity on a specific software - name, version, etc.

◦ DataDependencyImplies the requirement of some knowledge, or data or information in order for a(n) (Abstract or Concrete or SoftwareAgent of Digital) Resource to achieve its purpose of existence or function. This kind of data may originate from human input, computer files (e.g. configuration files), network connection, live video, etc.

Dependency Types

Predefined (but extensible) intention types:

◦ conceptual intentionQualifies a dependency as having significance to the artist’s conceptualization of the artwork.

◦ functional intentionQualifies a dependency required for the proper, consistent and complete functioning of the artwork.

◦ compatibility intentionDefines dependencies where different types of software/hardware components can be substituted and still operate satisfactorily together.

Dependency Intentions

Latest version of Art and Media domain ontologies tackle the following:

◦Detailed description of material, actors, activities and entities involved.

◦Information capturing processes performed by a CH related agent for representing the life cycle of digital resources.

◦Significant properties and dependencies, which may indicate relevant risks.

Modelling issues addressed thus far…

Thank you!

Demonstrate the three types of dependencies, by following the process below:

1. Introduce already existing resources of domain2. Specify a challenge/risk for a selected resource3. Instantiate and explain the new implemented concepts4. Execute different scenarios5. Discuss results

Description of Evaluation Exercise