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Technology тАУ Broad View
Aspects that play a role when integrating archives
leave the details of some core topics to the 2. day
Bernhard Neumair:
Thomas Soddemann:
Egon Verharen:
Peter Wittenburg:
Base Technologies
Middleware Concepts
Application Concepts
Interoperability Issues
Interoperability Aspects
тАв excellent paper by Bird and Simons
тАв many discussions about this topic during the last years
(Semantic Web, eScience)
тАв it will keep us busy despite all standardization efforts
D. Whalen: take all resources about EL you can get
тАв some general statements
(short since we know about the problems)
тАв more elaboration on metadata since
тАв MD is important to get archives together
тАв MD is not a central topic at this workshop
Interoperability Aspects
тАв technical encoding differences are still a problem for
тАв texts (UNICODE not yet 100% coverage)
тАв well-known to relevant boards
тАв need better web-services for character conversion
тАв media
тАв shooting on a moving target due to technological development
(storage/network + encoding/formats)
тАв but conversion algorithms are available
тАв in video area we miss same stability as in the audio area
Interoperability Aspects
тАв differences in structure and structure description will remain
тАв still many non-XML formats in use (legacy CHAT, WORD, тАж)
тАв still many resources are created without constraints (lots of errors)
тАв XML does not solve the issue, however, it makes structure explicit
тАв need agreements on general underlying models (AG, LAF, LMF, тАж)
тАв some conversions require interpretation
(what to do with inheritance and conditions)
тАв debated in several meetings and initiatives (E-Meld, OLAC, тАж)
тАв need improved format conversion web-services
Interoperability Aspects
тАв linguistic encoding differences will remain
тАв different theories and languages
тАв ad hoc needs during fieldwork
тАв also debated broadly during last years
тАв formal frameworks are available (RDF, RDF-S, OWL)
тАв concrete activities to tackle these issues
тАв GOLD ontology (E-Meld)
тАв ISO TC37/SC4 Data Category Registry
тАв IMDI-OLAC Gateway
тАв ECHO DORA domain (10 repositories, 5 disciplines)
тАвтАж
Metadata тАУ Classical View
relevant for integrating archives
MD search
I
metadata
domain
MD browse
combined search
content play
content search
I
resource
domain
content view
тАж
Metadata Classical View
Service provider
MD search
I
OAI PMH
Data provider
many examples:
тАв IMDI-OLAC
тАв IMDI-Ethnology
тАв IMDI-HoA
тАв IMDI-HoS
тАвтАж
wrapper
Data provider
Data provider
Data provider
Metadata Future View I
metadata
domain
resource
domain
MD Descriptions are abstractions
MD Descriptions are fingerprints
тАв small
тАв handy
тАв informative with limitations
Metadata Future View I
metadata
domain
MD Descriptions are abstractions
MD Descriptions are fingerprints
тАв small
тАв handy
тАв informative with limitations
so тАУ letтАЩs see what we can do with them
and what the requirements will be
Metadata Future View II
users can
тАв collect MD
тАв search on MD
тАв browse in MD
тАв run statistics
тАв enhance them
тАв add private resources
тАвтАж
тАв basket has a new temporary personalized
view on archival resources
тАв itтАЩs a private workspace
тАв maintain all references
Metadata Future View II
how can it work?
ontology
either remain
within one domain
such as IMDI or
convert all MD at
the receiver side
(ECHO solution)
Metadata Future View III
тАв MD providers offer services
structure is made explicit
тАв pick what you want and the way you want
тАв ontology still needed to do searches etc
тАв who does what?
тАв will providers use ontologies?
ontology
Ontology Debate I
тАв rich ontology vs. flat concept registry (incl. is_a relation)
in case of flat registry: where to put all relations such as
is_similar, has_a, тАж
тАв centralized ontologies vs. practical ontologies
GOLD starts with SUMO
ISO DCR is central тАУ agreement on personal DCRs
Ontology Debate II
relations
central ISO DCR
relations
MPI DCR
relations
personal DCR
Search Engine
how long will it take to be there?
nevertheless тАУ have to start now!
Domain of Ontologies
there will be many knowledge sources
Metadata Concepts
MD
language
bundling
hierarchies
browsing
annotations
тИЪ
MPEG7
тИЪ
тИЪ
тИЪ
тИЪ
METS
тИЪ
тИЪ
тИЪ
тИЪ
IMDI
тИЪ
тИЪ
OLAC
тИЪ
тИЪ
DC
тИЪ
тИЪ
тИЪ
тАв different container types are used (files, DB, CMS, тАж)
different shells/services necessary for exploration
тАв тАЬallтАЭ are schema based
Metadata Future
тАв did not speak about content integration
problems are similar тАУ text is not so much data
тАв what we want is clear or ?
тАв is it realistic?
тАв many questions to be answered
тАв it is an interesting time
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