pericles domain-specific ontological representations and ontology evolution
TRANSCRIPT
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
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
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.
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.
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
CB
20
11
<id domain CB> <dep domain CB>
...
{T11812, T13645} e
xt
lab
in
t
Software-based
<id domain SB> <swdep domain SB>
...
{T11812, T12565, T13251, T13348} e
xt
lab
in
t
Computer-based
SB
20
12
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
