The document outlines a grant agreement focusing on digital preservation by examining the reuse of information throughout its lifecycle, emphasizing the modeling of digital dependencies and ontology evolution. It highlights the importance of detecting and measuring semantic drift within various domains, with specific references to software-based, mixed-media, and computer-based art. The goal is to maintain ontology consistency while adapting to changes in semantics over time through domain-specific modeling.

1. 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]
Stratos Kontopoulos (ITI-CERTH)
Borås, May 19, 2015

2.  Art & Media
◦ Digital Video Art
◦ Software-based Art
◦ Media Productions
◦ Born Digital Archives
 Focus on modelling digital dependencies that
impact our ability to preserve digital items
◦ Mechanisms for representing dependencies based
on the LRM

9.  No generally accepted definition
 At least a decade old - recently started gaining
ground
 Focus on ontology evolution as the intellectual
framework of our efforts to address evolving
semantics & semantic drift
...the process of adaptation of an ontology to arisen
changes in the corresponding domain while maintaining both
the consistency of the ontology itself as well as the consistency
of depending artifacts. [1]
[1] Peter Plessers, Olga De Troyer, Sven Casteleyn, Understanding ontology evolution: A change detection approach, Web
Semantics: Science, Services and Agents on the World Wide Web, Volume 5, Issue 1, March 2007, Pages 39-49.

10.  Evolving terminology
◦ Computer-based
◦ Mixed-Media
◦ Software-based
 Aim: Detect and measure semantic drift [2]
 Test bed: SBA domain ontology
 Medium line audit trail
3 concepts: CB, MM, SB
[2] Wang, Shenghui, Stefan Schlobach, and Michel Klein. "Concept drift and how to identify it." Web Semantics: Science,
Services and Agents on the World Wide Web 9.3 (2011): 247-265.

12. Ct = < labelt(C), intt(C), extt(C) >
◦ label = human-readable string
◦ intension = set of properties related to a concept
◦ extension = set of things a concept extends to
CB2011
<id domain CB>
<dep domain CB>
...
{T11812,
T13645}
extlabint
Software-based
<id domain SB>
<swdep domain SB>
...
{T11812, T12565,
T13251, T13348}
extlabint
Computer-based
SB2012

14.  Ontologies are a state-of-the-art tool for
knowledge representation
 Domain-specific modelling based on LRM
 Modelling DP-related risks
 Ontology evolution as a means for studying
evolving semantics in a domain