1. Knowledge Technologies for Description of the Semantics of the Bulgarian Iconographical Artefacts Lilia Pavlova-Draganova Laboratory of Telemаtics – BAS, lilia@cc.bas.bg Desislava Paneva Institute of Mathematics and Informatics – BAS, dessi@cc.bas.bg Lubomil Draganov Institute of Mathematics and Informatics – BAS, lubo@cc.bas.bg

2. Presentation overview Why to develop ontology of the Bulgarian iconographical artefacts? In search of similar ontologies and standards, that could help the ontological representation of the iconographical knowledge Ontology of the Bulgarian iconographical artefacts Multimedia digital library “Virtual encyclopedia of Bulgarian iconography” and ideas for implementation of new semantic-based services Fifth HUBUSKA Workshop, Kosice, Slovakia, 31 May – 1 June, 2007

3. Motivation Extension and improvement the functionalities and services in the MDL “Virtual encyclopedia of Bulgarian iconography”MDL “Virtual encyclopedia of Bulgarian iconography” Content- and context-sensitive services for access, browse, search and group of iconographical objects Presentation the iconographical knowledge in explicit, systematized and clear way Provision of the basis for future extension of the ontological representation and description of the iconographical knowledge Fifth HUBUSKA Workshop, Kosice, Slovakia, 31 May – 1 June, 2007

4. Similar ontologies and standards art-E-fact ontology [Marcos et al.,’05] Ontology of art [Thomasson, ’04] CIDOC оbject-oriented Conceptual Reference Model (CRM) –International Committee for Documentation of the International Council of Museums –”Object-oriented domain ontology" for expressing the implicit and explicit concepts in the documentation of cultural heritage –Role: enable information exchange and integration between heterogeneous sources of cultural heritage information. –Final version: CIDOC CRM version 4.2 –Official standard: ISO 21127:2006 since 9/12/2006 –Available at: http://cidoc.ics.forth.gr/ Fifth HUBUSKA Workshop, Kosice, Slovakia, 31 May – 1 June, 2007

5. Class hierarchy in CIDOC CRM Fifth HUBUSKA Workshop, Kosice, Slovakia, 31 May – 1 June, 2007

6. Ontology of Bulgarian iconographical artefacts Main purpose, scope, and usage Purpose –Presentation of the semantic of Bulgarian iconographical objects, registered in multimedia digital library “Virtual encyclopedia of Bulgarian iconography”, painted by different artists from four iconographic schools, dated from several centuries, and located in Bulgaria. –Provision of a basis for content-sensitive services in the “Virtual encyclopedia of Bulgarian iconography” Fifth HUBUSKA Workshop, Kosice, Slovakia, 31 May – 1 June, 2007

7. Ontology of Bulgarian iconographical artefacts Main purpose, scope, and usage –Scope: - Restricted number of iconographical artefacts types - icons, plastic iconographical objects, wall-painting, etc. - Fixed historical belonging periods – from XII to XX century - Iconographic schools and their representatives -Tryavna, Bansko, Samokov, Doparsko Virtual encyclopedia of Bulgarian iconography –Usage: Virtual encyclopedia of Bulgarian iconography (http://mdl.cc.bas.bg/) Fifth HUBUSKA Workshop, Kosice, Slovakia, 31 May – 1 June, 2007

8. Conceptualization The knowledge about iconographical artefacts is related to three “thematic entities”: Identification -General data such as title, type, author, clan, iconographic school, period, dimensions, location, etc. Description -Scenes and characters, participation in scenes, etc. Technical -Used techniques, base material, diagnosis or conservation treatment, etc. Fifth HUBUSKA Workshop, Kosice, Slovakia, 31 May – 1 June, 2007 Ontology of Bulgarian iconographical artefacts

9. Fifth HUBUSKA Workshop, Kosice, Slovakia, 31 May – 1 June, 2007

10. ”Character” class and its subclasses in the ontology Ontology of Bulgarian iconographical artefacts

11. Juxtaposing with CIDOC CRM Fifth HUBUSKA Workshop, Kosice, Slovakia, 31 May – 1 June, 2007 Concepts and properties in “Bulgarian iconography artefacts” ontology CIDOC CRM respective chains of concepts and properties Dimension Iconographical object  has dimension  Dimension Dimension  was observed in  Unit of Measurement Dimension  has width value  Number Dimension  has height value  Number Dimension  has length value  Number E70 Thing (E22 Man-Made Object)  P43 has dimension (is dimension of)  E54 Dimension E54 Dimension  P40 was observed in  E16 Measurement (Unit of measurement of the dimension in our ontology) E54 Dimension  P90 has value  E60 Number (value of the dimensions of our ontology) Formalization in an ontology language – in a process of consideration Ontology of Bulgarian iconographical artefacts

12. “Virtual encyclopedia of Bulgarian iconography” - content Fifth HUBUSKA Workshop, Kosice, Slovakia, 31 May – 1 June, 2007 Multimedia digital library “Virtual encyclopedia of Bulgarian iconography” Web address: http://mdl.cc.bas.bg/http://mdl.cc.bas.bg/ It includes: –several hundred specimens of the Bulgarian iconography: icons, plastic iconographical objects, wall-painting, etc. from different artists, historical periods, and schools with its detail descriptions. –Techniques of the iconography –Description of significant iconographic schools of The Renaissance –Biographies of known iconographic artists –Glossary

13. “Virtual encyclopedia of Bulgarian iconography” - services Available services: –Navigating, browsing, and extracting of simple and complex iconographical objects and their descriptions –Multi-criteria search –Multilinguality (English and Bulgarian versions) –Personalized and adaptive access to the iconographical knowledge (in the process of development) –Digital information protection (in the process of improvement) back Fifth HUBUSKA Workshop, Kosice, Slovakia, 31 May – 1 June, 2007

14. Semantic-based services in “Virtual encyclopaedia of Bulgarian iconography” Fifth HUBUSKA Workshop, Kosice, Slovakia, 31 May – 1 June, 2007 Semantic-based search with grouping

15. Semantic-based services in “Virtual encyclopaedia of Bulgarian iconography” Fifth HUBUSKA Workshop, Kosice, Slovakia, 31 May – 1 June, 2007 Iconographical content browsing

16. Reference [Marcos et al., ’05] G. Marcos, C. Lamsfus, H. Escudero and M. T. Linaza, Semantic- Based Querying and Retrieving Information for Artistic Expressions: The Art-E-fact Ontology, In Proc. of the Fourth International Workshop on Content-Based Multimedia Indexing (CBMI05), Riga, Latvia, 2005. [Thomasson, ’04] A. L. Thomasson, The Ontology of Art, The Blackwell Guide to Aesthetics, ed. Peter Kivy, Oxford: Blackwell (2004): 78-92. Fifth HUBUSKA Workshop, Kosice, Slovakia, 31 May – 1 June, 2007