Achieving interoperability between the CARARE schema for monuments and sites and the Europeana Data Model

Transcription

1 Achieving interoperability between the CARARE schema for monuments and sites and the Europeana Data Model Antoine Isaac, Valentine Charles, Kate Fernie, Costis Dallas, Dimitris Gavrilis, Stavros Angelis Dublin Core Conference 4 September 2013

2 Europeana.eu, Europe s cultural heritage portal Text Video Image Sound 3D

3 Europeana s aggregation network 29M objects from 2,200 European galleries, museums, archives and libraries Libraries National Aggregators Archives Regional Aggregators Museums CARARE Thematic collections

4 CARARE: Bringing content for archaeology and historic buildings to Europeana users à 3 year project ( ) à Heritage organisations, archaeological museums, research institutions and specialist digital archives 29 partners in 21 countries à Aggregation services and good practices for organisations with content relating to archaeological monuments and historic sites Metadata repository (MORE) Metadata schema

5 CARARE Content à Images, text, videos, 3D models

6 CARARE Metadata Schema Acts as an intermediary between the native metadata of content providers and Europeana Heritage asset 4 themes Activities Digital resources Collection

7 Heritage Assets Monuments, landscape areas, artefacts à Title, Description à Characteristics Type, Materials, Dimensions, Inscriptions Spatial (place, address, map coordinates) Temporal (date, time span, period) à Actors à Designation, Condition à References à Relations 7

8 Digital Resources Images, texts, videos, audio, 3D models à Title, Description à Characteristics à Publication statement à Actors à Link to the object (URL) à Rights à Relations 8

9 EDM rationale 1. Distinguish provided objects (painting, book, movie, etc.) from their digital representations 2. Distinguish object from its metadata record 3. Allow multiple records for a same object, containing potentially contradictory statements about it 4. Support for objects that are composed of other objects 5. Support for contextual resources, including concepts from controlled vocabularies

10 Europeana Data Model: an example

11 Provided Cultural Heritage Object (CHO) and descriptive metadata

12 Web Resources digital representations

13 Aggregations Bundling it all together

14 ESE, EDM and data providers duties & benefits Mapping the data to EDM is harder than with previous Europeana schema, but it has benefits Data gets closer to original metadata Data can be contextualized, semantically linked to other data

15 Objectives Mapping: finding correspondences between the elements of both models so that CARARE can send good data to Europeana Why is it important to report on this here? à Mapping is rarely an easy issue à Models are complex, with subtle differences in world views à Both CARARE and Europeana benefits from mapping meditation One of the hardest (confronting) metadata exercises! à Sharing concrete experiences benefits to all Europeana partners And beyond: cf. goals of DC, a metadata ecosystem

16 Questions so far?

17 Mapping CARARE data to EDM A CARARE object becomes one or several EDM Provided Cultural Heritage Objects with: à Related web resources à Aggregations à Contextual information about place Some activity and spatial data cannot currently be mapped

18 Creating EDM resources from CARARE data CARARE s Heritage Assets always give raise to one EDM ProvidedCHOs with its companion Aggregation Heritage Asset s identifier PamFond/ edm:providedcho HA:PamFond/ ore:aggregation iid: /ha:pamfond/ The next issue is whether CARARE s Digital Resources are also EDM CHOs à It depends on the collection!

19 Scenario 1: cultural objects representing the CARARE HA count as CHOs edm:providedcho 1 edm:isrepresentationof edm:providedcho 2 edm:providedcho 5

20 Scenario 2: Digital Resources are cultural objects qualifying as EDM CHOs but some are shared among several Heritage Assets edm:providedcho 1 edm:providedcho 2 edm:providedcho 3

21 Scenario 3: Digital Resources that are views of lesser cultural importance are treated as EDM Web Resources edm:providedcho 1 edm:webresource 1 edm:webresource 2

22 Contextual Resources e.g., Places CARARE s geospatial enrichment represented with EDM contextual resource class

23 Conclusions Reflecting previous objectives slides CARARE provides better metadata to Europeana for 2M objects In the process: à We identifying and solved non-trivial issues à We documented solutions (this paper!) à It prompted updates to CARARE s schema (3D ICONS project) à It confirms the relevance of a richer model like EDM for Europeana

24 Thank you! Questions? Antoine Isaac, Valentine Charles, Kate Fernie, Costis Dallas, Dimitris Gavrilis, Stavros Angelis

25 Lessons learned Having a rich intermediary schema accommodates differences at home, and protects providers from changes in the target schema No matter how good the technologies the quality of metadata is not ensured Human supervision is required to achieve good quality at all stages Technical support is very important